This is a type of coral which is still found today in the seas around Australia, the Caribbean and South America.
When Captain Cook ran aground on the Great Barrier reef in Australia, he sailed over coral like this and it got lodged in the ship’s hull. It took 7 weeks to repair the ship.
Captain Cook, who was born in Marton, Sailed around the Pacific and sailed over coral reefs in the Pacific Ocean.
Climate change is a big threat affecting coral species today.