The marine life of Wolf Island includes: schooling Hammerhead, Galapagos and occasionally Whale sharks, as well as Green Turtles, Manta Rays and other pelagic fish.
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Phylogenetic studies published by Jack Garrick in 1982 and Leonard Compagno in 1988, based on morphology, placed the bignose shark in the "obscurus group" of Carcharhinus, centered on the dusky shark (C. obscurus) and the Galapagos shark (C. galapagensis).