Deep Sea Facts

The giant squid has the largest eyes in the world.

The rarest shark in the Gulf of Mexico is 5 inches long, glows in the dark, and shoots clouds of luminous fluid from tiny pockets near its fins — basically a living flashbang grenade.

Chris Lemons was a saturation diver left alone on the North Sea floor in 2012 when his umbilical - supplying gas, heat and light - was severed by a drifting ship. He had about five minutes of emergency gas. Colleagues found him around 30 minutes later, unconscious on the seabed. Two rescue breaths brought him back, with no lasting brain damage.