When Murat Draman went scuba diving off the coast of the southern Turkish province of Antalya and saw the temperature in the depths was pushing 30C, it didn't surprise him.

"We were at a depth of 30 metres (100 feet) this morning and the water was 29C," said Draman, a diving instructor in an area which is experiencing firsthand the rapid "tropicalisation" of the Mediterranean Sea.

Encouraged by increasingly warm waters, hundreds of species native to the Red Sea have moved through the Suez Canal and into the eastern Mediterranean, disrupting ecosystems, scientists say.

The threat is facing the entire Mediterranean, one of the fastest-warming seas, which this year saw its hottest June and July on record, figures from the Mercator Ocean International research centre show.

Draman, who reme

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