Bladefish

When it comes to scuba diving, Bond has the right idea. Who wants to waste their energy swimming down into the depths when you can use a Bladefish to do all the hard work? These diver propulsion vehicles have a built-in propeller that will pull you along underwater, secret agent style, all you need to do is take in the wonderful sights the ocean has to offer - and remember to breathe occasionally. There are 3 different models available the 2000, 4000 and 5000, but if you're an experienced diver we'd heartily recommend the Bladefish 5000, with up to 2 hours of battery life and suitable for use in depths of up to 50m. Best of all they're wonderfully light, the heaviest model weighing in at a mere 4.7 kg, so no need to stress about excess luggage charges on your way to your holidays.