A GIANT manta ray gave a British diver a show of thanks - after he untangled it from a commercial fishing line. Diving instructor Paul Slater, 54, was on a group trip near Cocos Island, Costa Rica when they spotted the 16ft giant caught up in a net. With help from American Don Shellhammer and their dive master, they swam up behind and used knives to unpin it from the line. Although it was scared at first and swam away they said it eventually slowed to a stop so they could release it. They then watched in amazement as it finally broke loose and began to swim around them in barrel rolls in what looked like a gesture of thanks.

Videographer / Director: Paul Slater & Don Shellhammer
Producer: John Balson, Nick Johnson
Editor: Joshua Douglas