He said he was amazed at the support and love from around the world.

Daniel Schempp, commander of the US Air Force unit on Ascension, set up an appeal fund for Mr Matsu, who he said was like the water god he seems invincible in the sea.It was close to reaching its $5,000 (3,800) target within 24 hours.

Major Schempp said: "He sustained critical bite wounds to his torso and is lucky to be alive, only kept so by the heroics of the small US and UK medical teams on island, and because of the donated blood supplies of volunteers."

The island government warned swimmers to be careful after the April attack, but now says: "Entering the sea on Ascension must be avoided until further notice."

The attack is a further blow to Ascensions 800-strong community following the partial closure of its military runway in April. Tourists may be put off visiting when UK flights resume.

Frankie Gonsalves suffered injuries to her foot but has largely recovered. She is shortly to return to her child safeguarding job on St Helena.

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Second shark attack in three months on Ascension Island - Telegraph.co.uk