Genus Phocaena is commonly known as the harbor porpoise, a small marine mammal species that inhabits the northeast Atlantic Ocean, the Mediterranean, and the Black Sea. Synonyms for this genus include Phocaenoides and Neophocaena. These porpoises are known for their distinctive spade-shaped teeth, dark coloration on their backs, and lighter coloration on their ventral sides. They typically feed on small fish and squid and can dive to depths of up to 200 meters in search of food. Despite being considered a species of least concern by the International Union for Conservation of Nature (IUCN), harbor porpoises face threats from pollution, overfishing, and accidental entanglement in fishing nets.