Endangered basking sharks rely on the ocean twilight zone during long-distance migrations

Endangered basking sharks aren't fasting during long-distance migrations. A new study led by the Woods Hole Oceanographic Institution shows that they may be foraging along the way, and in much deeper areas of the ocean than previously thought. As filter feeders, this species is most often observed close to the surface, especially in waters off of New England, but data show markedly different behavior during their winter migrations to the Sargasso Sea and the Caribbean.