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.
Pulley Ridge Pulley Ridge is a mesophotic coral reef system off the shores of the continental United States. The reef lies 100 miles west of the Tortugas Ecological Reserve and stretches north about 60 miles at depths ranging from 60–80 meters. Pulley Ridge was originally discovered in 1950 during a dredging operation conducted by an academic group from Texas. While well known to fishermen, this remarkable habitat remained undiscovered by scientists until 1999 when the U.S. Geological Survey (USGS) and graduate students from the University of South Florida happened upon it. This reef system, like other mesophotic ecosystems, is inhabited by photosynthesizing corals and algae that are adapted to low-light environments. It is habitat for numerous species of bottom fish including "Epinephelus morio" (red grouper) spawning area.