The Earth’s oceans make up more than 70 per cent of the planet, and we’ve only just barely begun to explore them. Despite the fact that human beings have been sailing the seas for hundreds of years, we have only seen about 5 per cent of every thing it holds. There’s a lot of deep, dark environments, animals, and mysteries lurking down there, in other words.
Read more at: https://www.therichest.com/technologies/15-deep-sea-secrets-about-the-ocean-we-cant-explain/