Six-legged 'hexapus' claimed as world first in Britain LONDON (AFP) - British marine experts have found what they claim is a world first -- a six-legged octopus, or "hexapus," whom they have christened Henry. The unique sea creature, which has two limbs fewer than a normal octopus, is believed to be the result of a birth defect rather than an accident, say his keepers at the Blackpool Sea Life Centre in northwest England. "We've scoured the Internet and talked to lots of other aquariums and no-one has ever heard of another case of a six-legged octopus," said supervisor Carey Duckhouse.

This is really interesting.