It's probably the largest flood in our planet's history.

Conservationists warn that this entire sea is endangered. Importance: Extensive fishing in the Mediterranean is removing crucial species from the food chain. Dive category: This is an open water dive.

A little over 5 million years ago, water from the Atlantic Ocean found a way through the present-day Strait of Gibraltar.

According to this theory, oceanic water rushed faster than a speeding car down a kilometre-high slope towards the empty Mediterranean Sea ... the end of the crisis, without scientists really ...