Marine biologist and cinematographer Craig Musberger takes us on a fantastic journey few have gone before: night diving with manta rays. From UnderH2O by PBS Digital Studios:
Manta rays are one of nature's most graceful and eerie animals. In Episode 2 of UnderH2O, we go underwater off the Kona Coast of the Big Island of Hawaii -- in the dark of night -- to film these enormous creatures. When conditions are right, manta rays flock to this special area in search of giant mouthfuls of plankton which they scoop up as they spin and loop around the divers.
Hit play or go to Link [YouTube] - Thanks Caroline!
After the jump, watch When A Volcano Erupts Underwater, also by UnderH2O: