Caribbean Sea
Marine biota in the region have representatives of both the Indian and Pacific oceans which were caught in the Caribbean before the emergence of the Isthmus of Panama four million years ago. In the Caribbean Sea there are around 1,000 documented species of fish, including sharks (bull shark, tiger shark, silky shark and Caribbean reef shark), flying fish, giant oceanic manta ray, angel fish, spotfin butterflyfish, parrotfish, Atlantic Goliath grouper, tarpon and moray eels. Throughout the Caribbean there is industrial catching of lobster and sardines (off the coast of Yucatán Peninsula).
Nervous shark
The nervous shark is found over continental and insular shelves off northern Australia from Shark Bay in the west to Moreton Bay in the east, as well as off Papua New Guinea and around the Solomon Islands. It is among the most common sharks in Darwin Harbor, the Gulf of Carpentaria, and Shark Bay. This species generally inhabits shallow inshore waters, to a depth of at least . It seems to particularly favor mangrove-lined areas with sandy-muddy bottoms and avoids areas with dense seagrass cover.