The San Jose was carrying gold, silver, gems and jewellery collected in the South American colonies to be shipped to Spain's king to help finance his war of succession against the British when it was sunk in June 1708 during heavy fighting off the coast of Cartagena. In the fighting the vessel was reported to have exploded, with most of its crew killed.

Sharks home in on faint bioelectric fields generated by the bodies of their prey which they pick up using sensitive detectors on their snouts.

When researchers from Duke University showed captive cuttlefish held in tank videos depicting the menacing silhouettes of a shark or predatory grouper fish they reacted by lowering the electric field dramatically. Being shown the shadow of a harmless crab produced no reaction.

Sharks home in on faint bioelectric fields generated by the bodies of their prey which they pick up using sensitive detectors on their snouts.

When researchers from Duke University showed captive cuttlefish held in a tank videos depicting the menacing silhouettes of a shark or predatory grouper fish they reacted by lowering the electric field dramatically. Being shown the shadow of a harmless crab produced no reaction.

A team of researchers from the University of Michigan focused on leatherback sea turtles nesting on St. Kitts, an island in the West Indies southeast of Puerto Rico. The team wanted to know what factors influence where and when the leatherbacks lay their eggs.

It has been suggested that characteristics of the sand, the slope of the beach and proximity to vegetation contribute to the success or failure of nests, but which factors cause female leatherback sea turtles to dig a nest in a particular spot has never been investigated.