Portal:Oceans/Facts/20

• Only one percent of the Key West National Wildlife Refuge is above sea level.

• Elysia diomedea is one of three species of sea slug known to exhibit kleptoplasty and thus benefit from photosynthesis.

• Christopher and Cosmas were two Japanese men who travelled the world's oceans with the English explorer Thomas Cavendish between 1587 and 1592.