The overwhelming majority of sharks have no interest in hunting humans, as there is plenty of prey available for them to hunt in the nearby waters. Larger species of shark prefer seals, dolphins, and large fish like tuna and billfish, which are found in the waters around the estuary. Most shark species are not known to prey on humans, with increased attacks occurring when natural prey is scarce. The New York Bight, the triangle of water with Montauk at one apex, the Jersey Shore at the second apex, and New York Harbor in the middle, is known for its abundance of marine life, thus providing a large amount of prey for sharks. The exact migration pattern is not completely known and currently being studied, but the general belief is that the larger pelagic sharks migrate north in the spring and return again to Florida and Georgia by the end of November as the water becomes too cold to be bearable. The waters in this area are also a haven for the larger species whose numbers are threatened as shark finning is forbidden by the State of New York.