For an unknown reason, the 38-foot towing vessel Sea Lion started taking on water near Atlantic Beach around 3 p.m., the Coast Guard said.
A tugboat sank along the Long Island shoreline for the second time in three days Wednesday.
The Wildlife Conservation Society says two new female sea lions are now on exhibit at its Prospect Park Zoo in Brooklyn. Two adult male sea lions from Oregon now live at the Queens Zoo.
The female California sea lion took the cross-country trip to her new home at the Bronx Zoo after wildlife officials determined she had become habituated to humans and could not be released back into the wild.