North Sea Videos on Instagram: "This six-gill shark (Hexanchus) was filmed during a submersible dive off the northeast coast of Molokai at a depth of 1000m (3280ft). The 2 red laser dots are 6 inches apart, resulting in a length of about 18 ft for the shark Great ecstatic live commentary by University of Hawaii Oceanography Professor Jeff Drazen! Many thanks to Dr. Craig Smith (University of Hawaii) and Dr. Eric Vetter for permitting release of this footage which was obtained as part of their re