In this week's New Scientist
, in an article on the cognitive skills of the higher (non-human) animals, we read in a description of an learning experiment:
... He noticed that when the answers were easy the dolphin sometimes seemed super-confident, enthusiastically lunging for the button and soaking the precious electronic equipment.
His ingenious solution was to waterproof the switches with condoms, which gained him quite a reputation at local stores – if you ever need to purchase vast numbers of condoms, Smith advises, note that it doesn't help to say you need them for your dolphin research.