The crocodile shark (Pseudocarcharias kamoharai) is a small, slender shark with a long, pointed snout and large eyes, adapted for deep-sea life. It inhabits warm oceanic waters worldwide, often found at depths of 200-500 meters. Known for its speed and agility, it feeds primarily on squid and small fish.

Pseudocarcharias kamoharai, commonly known as the crocodile shark, is found in tropical and warm temperate oceans worldwide. Its geographical distribution includes the Atlantic, Pacific, and Indian Oceans, often found near the continental and insular shelves and slopes. Specifically, it is native to regions such as the Gulf of Mexico, the Caribbean, off the coast of Brazil, the western and eastern coasts of Africa, the Arabian Sea, the Bay of Bengal, around Indonesia, and the waters near Japan and Australia.

The crocodile shark inhabits deep oceanic waters, typically ranging from 200 to 590 meters in depth, although it is known to occur as deep as 1,000 meters. It prefers warm waters, often found in temperatures ranging from 18 to 25 degrees Celsius. The species is most active during the night, ascending to shallower depths to feed.

Pseudocarcharias kamoharai occupies a niche as a mesopelagic predator. It primarily feeds on small bony fish, squid, and crustaceans. Its adaptations to the deep-sea environment include large eyes for enhanced vision in low-light conditions and a slender body that allows for efficient swimming in open water. The species is known for its rapid growth rate and high reproductive output, which are advantageous traits for survival in the competitive deep-sea ecosystem.