As estuaries are areas where fresh and saltwater mix, they are made of many different types of habitats. These habitats include oyster reefs, coral reefs, rocky shores, submerged aquatic vegetation, marshes, and mangroves. Different animals live in each of these different habitats like fish, shellfish, migratory birds, and many more. This diversity makes the food webs complex, and they also rely on the ecosystem as a place to nest and breed. As the salinity of the water changes constantly over the tidal cycle, plants and animals that live in estuaries have developed adaptations to respond quickly to the drastic changes.

How do animals survive in estuaries?

Animals survive in estuaries by adapting to the harsh conditions of their habitat. Estuaries either have salt water or fresh water. Animals survive by adapting to live in the different types of conditions and remaining in the regions of the estuaries where they are most comfortable and have consistency.

Why do fish lay eggs in estuaries?

Fish lay eggs in estuaries because these habitats offer a great amount of food availability for the development of young fish while also providing protection from predators. Estuaries are often used as breeding grounds by many species of fish due to these factors and are considered highly valuable.

Why are estuaries important for birds?

Estuaries are important for birds because estuaries offer a mix of nutrients from both the land and sea, creating a rich ecosystem. Since estuaries house numerous species of fish, they also create a food source for birds. Birds also use the beaches next to estuaries for feeding, resting, and breeding.

Estuary Animals Guides
Browse through our curated Estuary Animals Guides for additional categorizations, tips, details, variations, styles, and histories of Estuary Animals. Guides provide additional insights into the unique properties and shared relationships between elements.
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1.6’-2’ | 50-62 cm
2.1’-2.7’ | 63-83 cm
8’-10’ | 2.4-3 m
573-1,058 lb | 260-480 kg
15-30 years
Amazonian Manatee
62.000
83.000
300.000
480.000
30.00
3900
GUIDE
3D
Amazonian Manatee
13.4”-17.7” | 34-45 cm
26.8”-29.9” | 68-76 cm (Wingspan)
15.75”-20.1” | 40-51 cm
.6-.93 lb | .27-.42 kg
9-15 years
American Avocet
45.000
76.000
51.000
0.420
15.00
2940
GUIDE
3D
American Avocet
1.2”-2.4” | 3-6 cm
20”-40” | 51-102 cm
13-17 lb | 6-7.7 kg
15-40 years
American Eel
6.000
102.000
7.700
40.00
10000
GUIDE
3D
American Eel
47.2”-57” | 120-145 cm
51.2”-65” | 130-165 cm (Wingspan)
47.2”-57” | 120-145 cm
4.85-7.94 lb | 2.2-3.6 kg
20-50 years
American Flamingo
145.000
165.000
145.000
3.600
50.00
8100
GUIDE
3D
American Flamingo
13.4”-16.7” | 34-42.5 cm
47.2”-61” | 120-155 cm (Wingspan)
20.9”-26” | 53-66 cm
1.3-3.6 lb | .6-1.65 kg
20-32 years
American Herring Gull
42.500
155.000
66.000
1.650
32.00
190
GUIDE
3D
American Herring Gull
34”-47” | 86-119 cm
5.92’-7.83’ | 1.8-2.39 m
70-180 lb | 32-82 kg
25-35 years
Angel Shark
119.000
239.000
82.000
35.00
21200
GUIDE
3D
Angel Shark
12”-18” | 30.5-46 cm
11.4”-17.7” | 29-45 cm (Disc)
6.6-13.2 lb | 3-6 kg
8-10 years
Atlantic Stingray
46.000
45.000
6.000
10.00
1705
GUIDE
3D
Atlantic Stingray
12”-19” | 30.5-48 cm
5’-8’ | 152-244 cm
60-280 lb | 27-127 kg
30-55 years
Atlantic Tarpon
48.000
244.000
127.000
55.00
700
GUIDE
3D
Atlantic Tarpon
12.6”-15” | 32-38 cm
27.6”-32.3” | 70-82 cm (Wingspan)
14.6”-17.3” | 37-44 cm
.42-.88 lb | .19-.4 kg
10-24 years
Black-Tailed Godwit
38.000
82.000
44.000
0.400
24.00
1000
GUIDE
3D
Black-Tailed Godwit
15.75”-19.1” | 40-48.5 cm
28”-32.7” | 71-83 cm (Wingspan)
13”-15.75” | 33-40 cm
.33-.44 lb | .15-.2 kg
10-20 years
Black-Winged Stilt
48.500
83.000
40.000
0.200
20.00
1150
GUIDE
3D
Black-Winged Stilt
7.5”-11.4” | 19-29 cm
4.92’-8’ | 1.5-2.44 m
150-270 lb | 68-122 kg
12-16 years
Blacktip Shark
29.000
244.000
122.000
16.00
19200
GUIDE
3D
Blacktip Shark
7.5”-9.4” | 19-24 cm
20”-24” | 51-61 cm (Wingspan)
13”-16” | 33-41 cm
.6-1.2 lb | .27-.55 kg
3-18 years
Bufflehead
24.000
61.000
41.000
0.550
18.00
21060
GUIDE
3D
Bufflehead
7’-11.5” | 2.1-3.5 m
400-700 lb | 181-318 kg
12-25 years
Bull Shark
350.000
318.000
25.00
56000
GUIDE
3D
Bull Shark
.6”-1.7” | 1.4-4.4 cm
1.2”-3.9” | 3-10 cm (Carapace)
1”-3” | 2.5-7.5 cm (Carapace)
1.6-5.6 oz | 45-160 g
2-5 years
Chinese Mitten Crab
4.400
10.000
7.500
0.160
5.00
6150
GUIDE
3D
Chinese Mitten Crab
10.2”-18.1” | 26-46 cm
16”-28” | 41-71 cm
13.2-28.7 lb | 6-13 kg
16-24 years
Coffin Ray
46.000
71.000
13.000
24.00
2800
GUIDE
3D
Coffin Ray
11.4”-14.6” | 29-37 cm
34”-38” | 86-97 cm (Wingspan)
22”-28” | 56-71 cm
2-4.6 lb | .9-2.1 kg
11-15 years
Common Merganser
37.000
97.000
71.000
2.100
15.00
13350
GUIDE
3D
Common Merganser
4.5”-5.7” | 11.5-14.5 cm
13.8”-15.75” | 35-40 cm (Wingspan)
7.5”-9.4” | 19-24 cm
.09-.13 lb | .04-.06 kg
10-15 years
Common Sandpiper
14.500
40.000
24.000
0.060
15.00
5700
GUIDE
3D
Common Sandpiper
.4”-1” | 1-2.5 cm
2.75”-6.7” | 7-17 cm;
1-4 years
Common Seahorse
2.500
17.000
4.00
240800
GUIDE
3D
Common Seahorse
4.7”-5.3” | 12-13.5 cm
15.75”-18.5” | 40-47 cm (Wingspan)
9.8”-11” | 25-28 cm
.18-.4 lb | .08-.18 kg
10-18 years
Common Snipe
13.500
47.000
28.000
0.180
18.00
6500
GUIDE
3D
Common Snipe
5.1”-5.9” | 13-15 cm
7”-8” | 18-20 cm
4-10 years
Copperband Butterflyfish
15.000
20.000
10.00
3700
GUIDE
3D
Copperband Butterflyfish
30”-45” | 76-114 cm
18.9”-28.3” | 48-72 cm (Disc)
26.5-50.7 lb | 12-23 kg
13-18 years
Cownose Ray
114.000
72.000
23.000
18.00
12200
GUIDE
3D
Cownose Ray
19.9”-25.4” | 50.5-64.5 cm
44.9”-48.4” | 114-123 cm (Wingspan)
27.6”-35.4” | 70-90 cm
2.6-5.5 lb | 1.2-2.5 kg
6-22 years
Double-Crested Cormorant
64.500
123.000
90.000
2.500
22.00
300
GUIDE
3D
Double-Crested Cormorant
Dugong
302300
1.9’-3.1’ | 58-95 cm
3’-5’ | 93-153 cm
8’-13’ | 2.4-4 m
507-838 lb | 230-380 kg
50-70 years
Dugong
95.000
153.000
400.000
380.000
70.00
302300
GUIDE
3D
Dugong
9.5”-2.6” | 2.4-6.6 cm
1.77”-4.92” | 4.5-12.5 cm
3”-8” | 7.6-20.3 cm
.88-1.98 lb | .4-.9 kg
10-20 years
Eastern Oyster
6.600
12.500
20.300
0.900
20.00
2000
GUIDE
3D
Eastern Oyster
7.5”-8.7” | 19-22 cm
21.7”-23.6” | 55-60 cm (Wingspan)
13”-15” | 33-38 cm
.51-.93 lb | .23-.42 kg
10-15.5 years
Eurasian Woodcock
22.000
60.000
38.000
0.420
15.50
2000
GUIDE
3D
Eurasian Woodcock
1.6”-2.75” | 4-7 cm
24”-39” | 61-99 cm
3-8 lb | 1.4-3.6 kg
15-20 years
European Eel
7.000
99.000
3.600
20.00
9500
GUIDE
3D
European Eel
Gadwall
14040
11”-13.4” | 28-34 cm
31”-35” | 79-89 cm (Wingspan)
18”-22” | 46-56 cm
1.2-2.2 lb | .55-1 kg
10-28 years
Gadwall
34.000
89.000
56.000
1.000
28.00
14040
GUIDE
3D
Gadwall
6.25’-8’ | 1.91-2.44 m
6.6’-8.5’ | 2-2.6 m (Disc)
794-1,323 lb | 360-600 kg
5-10 years
Giant Freshwater Stingray
244.000
260.000
600.000
10.00
2620
GUIDE
3D
Giant Freshwater Stingray
3.5”-5.1” | 9-13 cm
59”-79” | 1.5-2 m
44-62 lb | 20-28 kg
20-40 years
Giant Mottled Eel
13.000
200.000
28.000
40.00
1050
GUIDE
3D
Giant Mottled Eel
10”-20” | 25.4-50.8 cm
33”-67” | 85-170 cm
33-132 lb | 15-60 kg
10-25 years
Giant Trevally
50.800
170.000
60.000
25.00
4700
GUIDE
3D
Giant Trevally
43.3”-59” | 110-150 cm
55.1”-66.9” | 140-170 cm (Wingspan)
43.3”-59” | 110-150 cm
4.4-9.9 lb | 2-4.5 kg
30-60 years
Greater Flamingo
150.000
170.000
150.000
4.500
60.00
18300
GUIDE
3D
Greater Flamingo
5.7”-6.7” | 14.5-17 cm
18.9”-20.1” | 48-51 cm (Wingspan)
9.1”-10.6” | 23-27 cm
.18-.26 lb | .08-.12 kg
13-15 years
Grey-Tailed Tattler
17.000
51.000
27.000
0.120
15.00
140
GUIDE
3D
Grey-Tailed Tattler
3.3”-3.9” | 8.5-10 cm
8.3”-9.8” | 21-25 cm
.9-1.2 oz | .02-.03 kg
15-20 years
Hairy Frogfish
10.000
25.000
0.030
20.00
5250
GUIDE
3D
Hairy Frogfish
51”-83” | 1.3-2.1 m
39”-59” | 1-1.5 m
9.5’-16.5’ | 2.9-5.05 m
2,866-7,055 lb | 1,300-3,200 kg
36-50 years
Hippopotamus
210.000
150.000
505.000
3200.000
50.00
603000
GUIDE
3D
Hippopotamus
9.8”-12.2” | 25-31 cm
23”-28” | 58-71 cm (Wingspan)
15.75”-19.3” | 40-49 cm
1-1.9 lb | .45-.88 kg
11-16 years
Hooded Merganser
31.000
71.000
49.000
0.880
16.00
27070
GUIDE
3D
Hooded Merganser
3.1”-4.7” | 8-12 cm
39”-51” | 99-130 cm
6.6-8.8 lb | 3-4 kg
15-20 years
Japanese Eel
12.000
130.000
4.000
20.00
7800
GUIDE
3D
Japanese Eel
5.9”-7.9” | 15-20 cm
18.1”-18.9” | 46-48 cm (Wingspan)
7.9”-10.6” | 20-27 cm
.17-.28 lb | .075-.128 kg
10-12 years
Killdeer
20.000
48.000
27.000
0.128
12.00
42250
GUIDE
3D
Killdeer
3.15”-5.51” | 8-14 cm
3.15”-5.91” | 8-15 cm
5”-9” | 12.7-22.9 cm
.88-1.98 lb | .4-.9 kg
10-15 years
Knobbed Whelk
14.000
15.000
22.900
0.900
15.00
860
GUIDE
3D
Knobbed Whelk
4’-7’ | 1.2-2.1 m
35-45 lb | 16-20 kg
20-30 years
Leopard Shark
210.000
20.000
30.00
15000
GUIDE
3D
Leopard Shark
12.6”-18.1” | 32-46 cm
24”-33.5” | 61-85 cm (Carapace)
30”-42” | 76-107 cm (Carapace)
154-375 lb | 70-170 kg
45-60 years (wild); 50-77 years (captivity)
Loggerhead Sea Turtle
46.000
85.000
107.000
170.000
77.00
43000
GUIDE
3D
Loggerhead Sea Turtle
Mallard
105400
12.6”-17.7” | 32-45 cm
32”-39” | 81-99 cm (Wingspan)
19.7”-28” | 50-71 cm
1.5-3.5 lb | .7-1.6 kg
5-29 years
Mallard
45.000
99.000
71.000
1.600
29.00
105400
GUIDE
3D
Mallard
1.8”-2.4” | 4.5-6 cm
5.1”-7.1” | 13-18 cm
11.8”-15.75” | 30-40 cm
2.2-10 lb | 1-4.5 kg
12-20 years
Mangrove Horseshoe Crab
6.000
18.000
40.000
4.500
20.00
230
GUIDE
3D
Mangrove Horseshoe Crab
14.2”-18.1” | 36-46 cm
54”-60” | 137-152 cm (Wingspan)
26”-33.1” | 66-84 cm
6-15 lb | 2.72-6.8 kg
6-15 years
Muscovy Duck
46.000
152.000
84.000
6.800
15.00
68000
GUIDE
3D
Muscovy Duck
33.1”-42.9” | 84-109 cm
59”-94” | 150-239 cm (Wingspan)
49.2”-63” | 125-160 cm
19-26 lb | 8.62-11.79 kg
15-25 years
Mute Swan
109.000
239.000
160.000
11.790
25.00
24800
GUIDE
3D
Mute Swan
5.1”-7.3” | 13-18.5 cm
18.9”-20.1” | 48-51 cm (Wingspan)
6.7”-9.4” | 17-24 cm
.19-.32 lb | .087-.145 kg
3-6.5 years
Northern Jacana
18.500
51.000
24.000
0.145
6.50
2950
GUIDE
3D
Northern Jacana
Osprey
444000
11.4”-16.3” | 29-41.5 cm
50”-70.9” | 127-180 cm (Wingspan)
16.9”-24” | 43-61 cm
2.4-4.4 lb | 1.1-2 kg
25-32 years
Osprey
41.500
180.000
61.000
2.000
32.00
444000
GUIDE
3D
Osprey
5.5”-7.1” | 14-18 cm
11”-14.2” | 28-36 cm (Wingspan)
5.9”-7.5” | 15-19 cm
.09-.21 lb | .04-.095 kg
3-13.5 years
Plains Wanderer
18.000
36.000
19.000
0.095
13.50
1140
GUIDE
3D
Plains Wanderer
Platypus
759400
3.9”-6.7” | 10-17 cm
3.5”-6.3” | 9-16 cm
15”-24.8” | 38-63 cm (Overall)
1.8-6.6 lb | .8-3 kg
7-21 years
Platypus
17.000
16.000
63.000
3.000
21.00
759400
GUIDE
3D
Platypus
.8”-1.4” | 2-3.5 cm
2”-3.4” | 5-8.7 cm (Carapace)
1.8”-3.1” | 4.6-8 cm (Carapace)
.8-2 lb | .36-.91 kg
8-12 years
Red Rock Crab
3.500
8.700
8.000
0.910
12.00
3800
GUIDE
3D
Red Rock Crab
8.9”-10.6” | 22.5-27 cm
31”-33” | 79-84 cm (Wingspan)
16.9”-20.9” | 43-53 cm
1.5-3.2 lb | .68-1.45 kg
10-23 years
Redhead Duck
27.000
84.000
53.000
1.450
23.00
5860
GUIDE
3D
Redhead Duck
12.2”-15.2” | 31-38.5 cm
41”-50” | 104-127 cm (Wingspan)
16.9”-21.25” | 43-54 cm
.7-1.5 lb | .3-.7 kg
10-25 years
Ring-Billed Gull
38.500
127.000
54.000
0.700
25.00
550
GUIDE
3D
Ring-Billed Gull
4.3”-4.9” | 11-12.5 cm
18.9”-22.4” | 48-57 cm (Wingspan)
6.7”-7.9” | 17-20 cm
.11-.17 lb | .05-.075 kg
5-10 years
Ringed Plover
12.500
57.000
20.000
0.075
10.00
2700
GUIDE
3D
Ringed Plover
13”-16.5” | 33-41.9 cm
48”-63” | 122-160 cm
25-80 lb | 11-36 kg
20-35 years
Roosterfish
41.900
160.000
36.000
35.00
3000
GUIDE
3D
Roosterfish
7.9”-10” | 20-25.5 cm
22”-25” | 56-64 cm (Wingspan)
13.4”-16.9” | 34-43 cm
.8-1.8 lb | .35-.8 kg
13-20 years
Ruddy Duck
25.500
64.000
43.000
0.800
20.00
20300
GUIDE
3D
Ruddy Duck
Sea Otter
117000
12.2”-18.5” | 31-47 cm
10.2”-15.75” | 26-40 cm
29.5”-45.3” | 75-115 cm
31-99 lb | 14-45 kg
10-23 years
Sea Otter
47.000
40.000
115.000
45.000
23.00
117000
GUIDE
3D
Sea Otter
6.7”-9.25” | 17-23.5 cm
17.7”-22” | 45-56 cm (Wingspan)
9.1”-12.6” | 23-32 cm
.14-.39 lb | .065-.154 kg
7-13 years
Short-Billed Dowitcher
23.500
56.000
32.000
0.154
13.00
1250
GUIDE
3D
Short-Billed Dowitcher
11.8”-22” | 30-56 cm
30”-54” | 76-137 cm
40-48.5 lb | 18-22 kg
11-16 years
Shovelnose Guitarfish
56.000
137.000
22.000
16.00
2810
GUIDE
3D
Shovelnose Guitarfish
2.4”-3.1” | 6-8 cm
11.5’-13.1’ | 3.5-4 m
29-60 lb | 13-27 kg
10-40 years
Slender Giant Moray
8.000
400.000
27.000
40.00
90
GUIDE
3D
Slender Giant Moray
8.7”-10.4” | 22-26.5 cm
39.4”-47.2” | 100-120 cm (Wingspan)
14.2”-16.9” | 36-43 cm
.66-1.26 lb | .3-.57 kg
9-14 years
Snail Kite
26.500
120.000
43.000
0.570
14.00
2450
GUIDE
3D
Snail Kite
18.9”-24.8” | 48-63 cm
53”-65” | 135-165 cm (Wingspan)
25.2”-33.1” | 64-84 cm
4.4-7.1 lb | 2-3.2 kg
15-25 years
Snow Goose
63.000
165.000
84.000
3.200
25.00
22300
GUIDE
3D
Snow Goose
12.2”-14.8” | 31-37.5 cm
22”-27.6” | 56-70 cm (Wingspan)
12.6”-15” | 32-38 cm
.55-.94 lb | .25-.425 kg
10-13 years
Southern Lapwing
37.500
70.000
38.000
0.425
13.00
4700
GUIDE
3D
Southern Lapwing
.04”-.06” | .9-1.4 mm
.05”-.07” | 1.2-1.8 mm
.39”-.59” | 10-15 mm
1-2 weeks
Spiny Water Flea
0.140
0.180
1.500
0.04
1460
GUIDE
3D
Spiny Water Flea
6.5’-7.4’ | 200-225 cm
6.5’-7.4’ | 200-225 cm
26’-30’ | 7.9-9.1 m
16,000-20,000 lb | 7,260-9,070 kg
50-80 years
Steller's Sea Cow
225.000
225.000
910.000
9070.000
80.00
4700
GUIDE
3D
Steller's Sea Cow
37.8”-46.5” | 96-118 cm
72”-102” | 183-259 cm (Wingspan)
57.1”-70.9” | 145-180 cm
15.4-30 lb | 7-13.6 kg
24-35 years
Trumpeter Swan
118.000
259.000
180.000
13.600
35.00
13100
GUIDE
3D
Trumpeter Swan
29.5”-37.8” | 75-96 cm
72”-84” | 183-213 cm (Wingspan)
45.3”-59.1” | 115-150 cm
7.5-21.2 lb | 3.4-9.6 kg
15-24 years
Tundra Swan
96.000
213.000
150.000
9.600
24.00
9350
GUIDE
3D
Tundra Swan
9.6”-11.4” | 24.5-29 cm
15.75”-20.1” | 40-51 cm (Wingspan)
8.3”-9.8” | 21-25 cm
.19-.32 lb | .085-.145 kg
3-6.5 years
Wattled Jacana
29.000
51.000
25.000
0.145
6.50
2000
GUIDE
3D
Wattled Jacana
2.1’-2.8’ | 65-85 cm
2.8’-3.6’ | 85-110 cm
10’-13’ | 3-4 m
794-1,653 lb | 360-750 kg
20-30 years
West African Manatee
85.000
110.000
400.000
750.000
30.00
260
GUIDE
3D
West African Manatee
2.3’-3.5’ | 70-107 cm
2.8’-4.3’ | 85-130 cm
10’-14.75’ | 3-4.5 m
794-1,190 lb | 360-540 kg
25-30 years
West Indian Manatee
107.000
130.000
450.000
540.000
30.00
5200
GUIDE
3D
West Indian Manatee
Black-Tailed Godwit (Limosa limosa)
Comparison drawing of the Black-Tailed Godwit compared to other shorebirds

The Black-Tailed Godwit (Limosa limosa) is a shorebird with long legs and a long bill. There are three subspecies, and all of them have the same physical characteristics of an orange head, neck and chest in breeding plumage and gray-brown in winter, and a black and white wingbar. They like to occupy fens, lake edges, damp meadows, and bogs during breeding season; in the winter they move to estuaries, swamps, and floods. Their diet is mainly invertebrates, but they will eat aquatic plants in the winter and during migration season.

The Black-Tailed Godwit has a wingspan in the range of 27.6”-32.3” (70-82 cm) and total weight of .42-.88 lb (.19-.4 kg). The body of the Black-Tailed Godwit has an overall length between 14.6”-17.3” (37-44 cm), body width of 3.5”-4.3” (9-11 cm), and standing height of roughly 12.6”-15” (32-38 cm). The typical lifespan of the Black-Tailed Godwit is between 10-24 years.

Set of scaled side and front drawings of the Black-Tailed Godwit
The Black-Tailed Godwit (Limosa limosa) is a shorebird with long legs and a long bill. There are three subspecies, and all of them have the same physical characteristics of an orange head, neck and chest in breeding plumage and gray-brown in winter, and a black and white wingbar.

The Black-Tailed Godwit has a wingspan in the range of 27.6”-32.3” (70-82 cm) and total weight of .42-.88 lb (.19-.4 kg). The body of the Black-Tailed Godwit has an overall length between 14.6”-17.3” (37-44 cm), body width of 3.5”-4.3” (9-11 cm), and standing height of roughly 12.6”-15” (32-38 cm). The typical lifespan of the Black-Tailed Godwit is between 10-24 years.

Set of scaled side and front drawings of the Black-Tailed Godwit
Black-Tailed Godwit (Limosa limosa)
Height:
12.6”-15” | 32-38 cm
Width:
27.6”-32.3” | 70-82 cm (Wingspan)
Length:
14.6”-17.3” | 37-44 cm
Depth:
Weight:
.42-.88 lb | .19-.4 kg
Area:

Body Width: 3.5”-4.3” | 9-11 cm

Scientific Name
Limosa limosa
Lifespan
10-24 years

Drawings include:

Black-Tailed Godwit side view, front, flying (assorted)

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Red Rock Crab (Grapsus grapsus)
Comparison drawing of the Red Rock Crab compared to other crustaceans

It may be more delicious than the Dungeness Crab, however, the Red Rock Crab (Cancer productus) is less meaty. If you are a sport or commercial fisherman, you can locate it on or near harder substrates like rock and pilings in the eastern Pacific coast in North America. But be warned that the Red Rock Crab is very agile, hence hard to catch. The Red Rock Crab fits in the family Cancridae with teeth set between the eyes, both of which have equal size and shape. Juveniles can assume different colors but adults are brick-red, possessing large distinctive pincers with black tips and a lack of projection or serration on their claws.

The Red Rock Crab has a carapace length between 1.8”-3.1” (4.6-8 cm), carapace width of 2”-3.4” (5-8.7 cm), body height of .8”-1.4” (2-3.5 cm), and weight between .8-2 lb (.36-.91 kg). The typical lifespan of the Red Rock Crab is between 8-12 years.

Set of scaled top and elevation drawings of the Red Rock Crab
It may be more delicious than the Dungeness Crab, however, the Red Rock Crab (Cancer productus) is less meaty. If you are a sport or commercial fisherman, you can locate it on or near harder substrates like rock and pilings in the eastern Pacific coast in North America.

The Red Rock Crab has a carapace length between 1.8”-3.1” (4.6-8 cm), carapace width of 2”-3.4” (5-8.7 cm), body height of .8”-1.4” (2-3.5 cm), and weight between .8-2 lb (.36-.91 kg). The typical lifespan of the Red Rock Crab is between 8-12 years.

Set of scaled top and elevation drawings of the Red Rock Crab
Red Rock Crab (Grapsus grapsus)
Height:
.8”-1.4” | 2-3.5 cm
Width:
2”-3.4” | 5-8.7 cm (Carapace)
Length:
1.8”-3.1” | 4.6-8 cm (Carapace)
Depth:
Weight:
.8-2 lb | .36-.91 kg
Area:
Scientific Name
Grapsus grapsus
Lifespan
8-12 years

Drawings include:

Red Rock Crab top view, side

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Common Sandpiper (Actitis hypoleucos)
Scale illustration of an average Common Sandpiper compared to other shorebird species

The Common Sandpiper (Actitis hypoleucos) is a small Palearctic shorebird and a sister species of the Spotted Sandpiper. They like to breed in temperate and subtropical Europe and Asia, and during migration season the species travels to Africa, southern Asia, and Australia. Using sight, they forage for food on the ground or in shallow water, and they mainly eat insects, crustaceans, and other invertebrates. They are characterized by their gray-brown coloration with white underparts, short and dark-yellowish legs and feet, and a pale bill with a dark tip. In the winter they have a duller plumage.

The Common Sandpiper has a wingspan in the range of 13.8”-15.75” (35-40 cm) and total weight of .09-.13 lb (.04-.06 kg). The body of the Common Sandpiper has an overall length between 7.5”-9.4” (19-24 cm), body width of 2.2”-2.75” (5.5-7 cm), and standing height of roughly 4.5”-5.7” (11.5-14.5 cm). The typical lifespan of the Common Sandpiper is between 10-15 years.

Series of measured illustrations of the Common Sandpiper
The Common Sandpiper (Actitis hypoleucos) is a small Palearctic shorebird and a sister species of the Spotted Sandpiper. They like to breed in temperate and subtropical Europe and Asia, and during migration season the species travels to Africa, southern Asia, and Australia.

The Common Sandpiper has a wingspan in the range of 13.8”-15.75” (35-40 cm) and total weight of .09-.13 lb (.04-.06 kg). The body of the Common Sandpiper has an overall length between 7.5”-9.4” (19-24 cm), body width of 2.2”-2.75” (5.5-7 cm), and standing height of roughly 4.5”-5.7” (11.5-14.5 cm). The typical lifespan of the Common Sandpiper is between 10-15 years.

Series of measured illustrations of the Common Sandpiper
Common Sandpiper (Actitis hypoleucos)
Height:
4.5”-5.7” | 11.5-14.5 cm
Width:
13.8”-15.75” | 35-40 cm (Wingspan)
Length:
7.5”-9.4” | 19-24 cm
Depth:
Weight:
.09-.13 lb | .04-.06 kg
Area:

Body Width: 2.2”-2.75” | 5.5-7 cm

Scientific Name
Actitis hypoleucos
Lifespan
10-15 years

Drawings include:

Common Sandpiper side view, front, flying (assorted)

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Ring-Billed Gull (Larus delawarensis)
Comparison illustration of the size of a Ring-Billed Gull to other species of seabirds

The Ring-Billed Gull (Larus delawarensis) is a medium-sized seabird with white and gray plumage. They have yellow eyes with red rims and their beak has a dark ring. Ring-billed gulls are native to the Northern United States and are found near lakes, rivers, and the coasts. Ring-billed gulls are highly comfortable around humans and can sometimes spend time in parking lots, garbage dumps, and beaches. Ring-billed gulls have an omnivorous diet and eat insects, fish, earthworms, and rodents. They sometimes wonder through fields for food, but are typically opportunistic feeders. Ring-billed gulls are not in danger of extinction.

The Ring-Billed Gull has a wingspan in the range of 41”-50” (104-127 cm) and total weight of .7-1.5 lb (.3-.7 kg). The body of the Ring-Billed Gull has an overall length between 16.9”-21.25” (43-54 cm), body width of 5.5”-6.9” (14-17.5 cm), and standing height of roughly 12.2”-15.2” (31-38.5 cm). The typical lifespan of the Ring-Billed Gull is between 10-25 years.

Scaled collection of drawings of Ring-Billed Gull in various poses with dimensions
The Ring-Billed Gull (Larus delawarensis) is a medium-sized seabird with white and gray plumage. They have yellow eyes with red rims and their beak has a dark ring. Ring-billed gulls are native to the Northern United States and are found near lakes, rivers, and the coasts.

The Ring-Billed Gull has a wingspan in the range of 41”-50” (104-127 cm) and total weight of .7-1.5 lb (.3-.7 kg). The body of the Ring-Billed Gull has an overall length between 16.9”-21.25” (43-54 cm), body width of 5.5”-6.9” (14-17.5 cm), and standing height of roughly 12.2”-15.2” (31-38.5 cm). The typical lifespan of the Ring-Billed Gull is between 10-25 years.

Scaled collection of drawings of Ring-Billed Gull in various poses with dimensions
Ring-Billed Gull (Larus delawarensis)
Height:
12.2”-15.2” | 31-38.5 cm
Width:
41”-50” | 104-127 cm (Wingspan)
Length:
16.9”-21.25” | 43-54 cm
Depth:
Weight:
.7-1.5 lb | .3-.7 kg
Area:

Body Width: 5.5”-6.9” | 14-17.5 cm

Scientific Name
Larus delawarensis
Lifespan
10-25 years

Drawings include:

Ring-Billed Gull side view, front, flying (assorted)

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Loggerhead Sea Turtle (Caretta caretta)
Comparison illustration of the size of a Loggerhead Sea Turtle to other turtles and a person

Known as the largest of the hard-shelled turtles, the Loggerhead Sea Turtle (Caretta caretta) is an oceanic turtle with a broad habitat range with populations found in the Atlantic, Pacific, and Indian Oceans. Within this large distribution, it prefers to dwell in shallow, open waters of coastlines and will travel far to reach these desired habitats. The Loggerhead Sea Turtle is omnivorous and considered a keystone species due to its diet, providing food for other animals at the bottom of the ocean through its expelled waste. Its size also makes it the second largest existing turtle following the Leatherback Sea Turtle.

The Loggerhead Sea Turtle has a carapace length between 30”-42” (76-107 cm), carapace width of 24”-33.5” (61-85 cm), body height of 12.6”-18.1” (32-46 cm), and weight in the range of 154-375 lb (70-170 kg). The typical lifespan of the Loggerhead Sea Turtle is between 45-60 years in the wild and 50-77 years in captivity.

Scaled collection of drawings of Loggerhead Sea Turtle in various poses
Known as the largest of the hard-shelled turtles, the Loggerhead Sea Turtle (Caretta caretta) is an oceanic turtle with a broad habitat range with populations found in the Atlantic, Pacific, and Indian Oceans. Within this large distribution, it prefers to dwell in shallow open waters of coastlines.

The Loggerhead Sea Turtle has a carapace length between 30”-42” (76-107 cm), carapace width of 24”-33.5” (61-85 cm), body height of 12.6”-18.1” (32-46 cm), and weight in the range of 154-375 lb (70-170 kg). The typical lifespan of the Loggerhead Sea Turtle is between 45-60 years in the wild and 50-77 years in captivity.

Scaled collection of drawings of Loggerhead Sea Turtle in various poses
Loggerhead Sea Turtle (Caretta caretta)
Height:
12.6”-18.1” | 32-46 cm
Width:
24”-33.5” | 61-85 cm (Carapace)
Length:
30”-42” | 76-107 cm (Carapace)
Depth:
Weight:
154-375 lb | 70-170 kg
Area:
Scientific Name
Caretta caretta
Lifespan
45-60 years (wild); 50-77 years (captivity)

Drawings include:

Loggerhead Sea Turtle top view, side

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