The U.S. is likely to grant national-monument status to Pacific island regions that together are larger than Alaska and Texas combined—a "great choice," conservationists say, if the areas are actually protected.
Unprecedented footage captures a great white shark off the coast of South Africa breaching the water's surface to snare a seal during nocturnal hunting.
Sharks and other creatures in the Coral Sea are vulnerable to human activities and could be wiped out if the area isn't protected, conservationists warn.
Sharks follow well-used migration routes to popular feeding spots—areas that could be set aside for conservation, experts announced at a recent meeting.
There is such a thing as a free lunch for Hawaii's jack fish and sharks, which follow endangered Hawaiian monk seals as they hunt and then steal their prey.
Visitors can snorkel and swim with whale sharks as they make an annual appearance to feed on plankton blooms each September off Mexico. But there's concern the tourists could innocently harm this vulnerable species.