Cold temperate Northwest Atlantic Ocean - List of fishes

Carcharodon carcharias, known as the white shark, is found in the coastal and oceanic waters of temperate and sub-tropical oceans and seas worldwide. A solitary predator, it feeds on fish, sharks, rays, and marine mammals, and can also scavenge on whale carcasses. With a keen sense of sight, it is curious and observant towards objects and activities. It is sometimes responsible for attacks on surfers.

This predator lives in rocky areas, generally at depths of up to 600 meters. Endangered, this species is vulnerable to overfishing due to its slow growth and late maturation, with declining populations observed in areas such as Brazil, Bermuda, and the Azores. Conservation efforts are crucial to protect this species, particularly through fisheries regulation and the protection of essential marine habitats for their survival.

The blue shark, also known as the "blue skin shark," is a pelagic predator found in temperate and tropical marine waters, with occasional sightings near the coast. Its wide distribution, however, is threatened by overfishing. Recognizable by its blue back and white belly, this sleek-bodied shark mainly feeds on small fish, mollusks, cephalopods, and sometimes birds.