The Pseudorca crassidens, commonly known as the false killer whale, is a large oceanic dolphin found in tropical and subtropical oceans worldwide. It is known for its elongated body, rounded head, and dark coloration. This species exhibits complex social structures and is known for its cooperative hunting tactics.

Pseudorca crassidens, commonly known as the false killer whale, is found in warm and temperate oceans worldwide, including the Atlantic, Pacific, and Indian Oceans. It is also observed in the Mediterranean Sea and the Red Sea. Their distribution is primarily in deep offshore waters, but they can occasionally be seen in shallower coastal areas.

False killer whales prefer deep oceanic waters and are typically found in temperatures ranging from 18 to 24 degrees Celsius. They are most commonly associated with tropical and subtropical regions but have been recorded in temperate waters as well.

As apex predators, false killer whales occupy a high trophic level within the marine ecosystem. They feed on a variety of marine life, including fish and squid, and are known to hunt cooperatively. They exhibit social behaviors and are often seen in pods, which can range from a few individuals to over 100. Their role in the ecosystem includes regulating the populations of their prey species, thus maintaining a balance within the marine food web.