The Safina Center

Dec 30th
2013

Some Sharks Give Birth Where Their Moms Did

Since the early 1990’s, biologist Samuel Gruber and his colleagues have suspected that some coastal shark species may return to their birthplace to breed – a behavior termed “natal philopatry”.  They suspected this because they had observed some sharks making seasonal migrations to discrete coastal areas to give birth. In particular, in the Bimini Islands, Bahamas, there were strong clues that lemon sharks there returned to their birthplace to breed. They noticed the same female lemon sharks returning to Bimini over and over to give birth. And they noticed that young lemon sharks in Bimini remain in the same nursery area they were born in until about age 3.

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Oct 15th
2013

Bluefin Tuna: Promise and Problems in a New Government Proposal

For sixty years, U.S. fishermen targeting yellowfin tuna and swordfish in the Gulf of Mexico and Atlantic Ocean with longlines have been capturing and killing severely depleted bluefin tuna. Longlines, which can stretch for 40 miles long and contain hundreds of hooks, are very indiscriminate, catching many other non-target species as well.

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