70% of the oxygen we breathe is produced by the oceans, which comes from tiny ocean organisms called phytoplankton.
Jelly fish have been round for more than 650 million years which means they outdate both sharks and dinosaurs.
Although the majority of people point to a shark when asked what sea dwelling creature they fear the most, the jellyfish has in fact claimed 15-30 times more lives than sharks.
So much is getting into our ocean that in some places these plastic particles outnumber plankton by a ratio of 26:1
There's a "sea organ" built on the coast of Croatia that plays music like an organ when waves crash in and out of it.
Seahorses are monogamous and mate for life, they are the only animals in which the male, not the female, gives birth and care for their young.
Seahorses engage in an eight hour courtship dance which includes spinning around, swimming side by side and changing colours.
Coral is so close to the chemistry of human bones it is now being used to replace or repair bones in the human body.
Scientists have discovered that there is around 20 million tons of gold in the ocean, although it’s not very easy to mine since most of the undissolved gold deposits are a mile or two under water and incased in rock. The ocean water also contains gold although on average there is only 13 billionths of a gram of gold per litre of sea water
Our ocean is a deep, dark and mysterious void which is full of undiscovered wonders. National Geographic speculated in 2011, that 86% of the World’s species have yet to be classified. Leaving the question open do mermaids and sea monsters exist?
An Octopus has three hearts and the colour of its blood is blue. The same pigment that gives the octopus blood its blue colour, hemocyanin, is responsible for keeping the species alive at extreme temperatures. Because they don't have bones even large octopuses can fit through an opening the size of a 10p coin.
Bottle messages are not litter, as they are not discarded. Steps can be taken to reduce their environmental impact.