A sport that actually looks like it might be fun to play, as well as being quite offbeat, is underwater hockey. As the name suggests, it is similar to hockey, with the aim being to whack a 1.5 kilogram lead puck into your opponent's goal using a short, hooked stick. Competitors wear masks, snorkels and fins and a thick glove to protect them from the puck and the pool bottom.
Each team has six players in the water and up to four substitutes. The game was developed in the 1950s by the British Navy to keep their divers fit, and has a reasonably loyal following in Australia. Strategy is said to be very important, as is remembering to come to the surface to breathe on a regular basis.