The world's biggest coral — an organism made up of about a billion polyps — is about three times bigger than the previous record-holder and was discovered by chance during an expedition off the Solomon Islands.

The largest coral in the world has been found in the Solomon Islands. The coral, which is visible from space, is three times larger than the previous record-breaker, and is believed to be about 300 years old.

The enormous organism is bigger than a blue whale and made up of millions of genetically identical, tiny animals called polyps