The harsh Irish sea might not be the ideal place to scuba dive, but the islands that lie nearby to Dún Laoghaire's coast have diving opportunities that rival some of the best diving spots in the country. If you're an experienced diver with plenty of prior practice this is the dive for you - despite Dalkey's seemingly calm surfaces there are strong currents beneath - expect to encounter a range of anenomes, starfish, wrasse, octopus, lobster and many more fascinating creatures. Dives usually take place around Dalkey Island and the nearby Muglins. If you're an avid diver you may want to check the dates for dives to shipwrecks in Dublin Bay.