Sciapod: From the 13th Century Mappa Mundi, a member of the Monstrous Races one would encounter on a sea journey to the other side of the world.
Stop Light Dragon Fish: The most numerous vertebrae on earth, found below 500 metres across all oceans, there are thousands of trillions of them. They are about 4cm long.
Greenhouse: The sea absorbs 90% of the increase in temperature caused by mans creation of greenhouse gases. Corals act like greenhouses, providing optimum growing locations in barren environments.
Bleach Bottle: Soon there will be more plastic in the sea than fish! The increase in sea temperature and increased acidity cause bleaching events on Coral Reefs that kill large areas leaving them bleached and white.
Vitruvian Man: A fathom, the nautical unit of depth, is measured at 6ft, so our way of understanding sea depth is based on the height of a man, just like our way of measuring the height of horses is based on the human hand.
Scales of Justice: The sea is notoriously lawless, even though there are laws to govern it. The distance a cannonball could be fired determined the original 3mile exclusion zone around an island. There are still pirates.
Container: 90% of world trade is carried in Containers on the sea.
Oannes: In Mesopotamian mythology, an amphibious being who taught mankind wisdom.
Blemmyes: These are a war like race with no heads, like the sciapods they may be encountered on a long sea journey.