Only ~5% of the ocean has been explored.
- The immortal jellyfish, as its name suggests, is biologically immortal meaning that it can potentially live forever.
- Deep sea vents can reach over 700 degrees Fahrenheit.
- Across the world, there are an estimated 3 million shipwrecks in the ocean.
- Around 97% of the Earth’s water can be found in the five oceans.
- Just one millilitre of coastal water taken from the ocean's surface can contain up to 10 million viruses.
- There are more viruses in the ocean than there are stars in the Milky Way.
- The box jellyfish is one of the most venomous marine creatures in the world, with its poison being able to cause paralysis, cardiac arrest, and even death in just a few minutes.
- The deepest part of the ocean lies in the Mariana Trench, called Challenger Deep. It has been measured to be 10,984m (36,037 ft) in depth. In comparison, Mount Everest is only 8,849m in height.
- It is completely pitch black at the bottom of the ocean, leaving it devoid of any plants as photosynthesis cannot occur without sunlight. The only animals which are able to live down there are ones that have adapted to the absence of light and crushing pressures.
