The Irrawaddy dolphin is distinguishable from other dolphins by their very expressive face. These oceanic dolphins are grouped under the family Delphinidae and prefer sea coasts, river outlets, and shallow waters of Southeast Asia, Bay of Bengal, and Indonesia. They are sociable, existing in small groups, slow swimmers, and may occasionally spit spout of water from their mouths. Irrawaddy dolphins lack beaks but are highly recognizable from their charismatic rounded face that makes them resemble baby belugas. Other traits include small dorsal fin but long and larger flippers and greyish body, though their belly is lighter. Irrawaddy dolphins also love to engage in cooperative fishing with local fishermen.