Fish fishes underwater ocean sea sealife nature 97. The grey reef shark carcharhinus amblyrhynchos sometimes misspelled amblyrhynchus or amblyrhinchos is a species of requiem shark in the family carcharhinidaeone of the most common reef sharks in the indo pacific it is found as far east as easter island and as far west as south africathis species is most often seen in shallow water near the drop offs of coral reefs.