The bell was successfully recovered the 7th of August. Mr. Allen's team led the operation using his yacht M/Y Octopus, which is equipped with a state-of-the-art remotely operated vehicle (ROV). Once restored, the bell will respectfully serve as a tangible and fitting memorial for the 1,415 lives lost when the Bismarck sunk the ship in the North Atlantic.

Brighton (UK) coroner, Veronica Hamilton-Deeley, concluded the deaths on June 17 last year were the result of diving accidents, after hearing from witnesses and medical experts. However, the Maltese authorities accuse Mr Martin, 55, of Rustington, West Sussex, of being 'negligent in his obligations'.

Look up a chambered nautilus in a book or on the web will reveal they are in the same class of mollusks as octopuses, squid and cuttlefish. The first thing that sets this cephalopod apart from the rest of the group is that the nautilus date back more than 500 million years, and were once the dominant form of life in the ocean. And to share a night dive with one of these true living fossils is a very fortunate event.

It's large, fan-like fins wave and flare like the skirts of a Flamenco dancer, revealing vibrant shades of rust and orange with flashes of royal blue as it hunts its prey under the cover of night. As beautiful as its dance may be, one prick from one of its long dorsal spines will inflict a very painful burning sensation.