Tube worms like it hot, but larvae not

The larvae of some tube worms that attach themselves to the seafloor around hydrothermal vents can’t stand the heat there. If they drift into chilly waters, however, they go into suspended animation until they find water at a temperature in between. This phenomenon, researchers say, could explain how animals of nonmobile species that depend upon the hot water and nutrients gushing from isolated vent systems can nonetheless be found at widely dispersed locations.