The oceans were formed a long time ago so they deserve our respect – in any case they are ultra important for our own well being and survival. It is thought that the ocean basins began to fill about 3.8 billion years ago.

So when did we begin to explore the oceans – both above and below the surface?

The aqua‐lung / aqualung was invented by Jacques(‐Yves) Cousteau and Émile Gagnan in 1943.