The Hawaiian blackhead triplefin can be found in a coral reef in which 2.4 square mile area?
Hawaiian blackhead triplefin The Hawaiian blackhead triplefin (Enneapterygius atriceps), also known as the Hawaiian triplefin in Hawaii, is a species of triplefin blenny in the genus "Enneapterygius". It is a tropical blenny found in coral reefs in the Pacific Ocean, from the Hawaiian Islands, French Frigate Shoals, Laysan Island, and Midway Atoll. Blennies in this species swim at a depth range of 1-23 metres, and inhabit dead coral and rock.
Whitecheek shark The whitecheek shark or widemouth blackspot shark ("Carcharhinus dussumieri"), is a requiem shark of the family Carcharhinidae, found in the Indo-West Pacific Ocean between latitudes 34°N and 25°S. It can reach a length of 1 m. It feeds mainly on fish, cephalopods, and crustaceans. It is a viviparous species, with the female giving birth to up to four live young.