Asian Diver magazine has delivered another in its useful series of annuals with 101 Coolest Dives - The Thrill Seeker's Guide to the Planet's Coolest Diving ($80, Emap Singapore). The 101 Coolest Dives attempts to identify the most-memorable dives around the world, from searching for the largest fish in the sea, the whale shark (Dive three at Richelieu Rock in the Similan Islands off Thailand) or tiny mating mandarin fish (Dive 50 at Mandarin Lake in Palau). The guide has a great range of unusual dives, thanks in part to its wide choice of writers. Oddities include Dive 20 in the aquarium in Hualien, Taiwan, where you can dive with dolphins, sharks and eagle rays. Dive 22 takes you into the lost Lion City in China's Thousand Island Lake in Zhejiang, a metropolis flooded 50 years ago for a hydroelectric dam. The dives are sometimes literally cool, such as Dive 81 in the Arctic Circle, where you can see icebergs from below. Divers looking for a guide that profiles a destination in more depth, literally and figuratively, can check out Diving Australia - A Guide to the Best Diving Down Under, the most recent in the series of handy Periplus Action Guides (US$24.95, Tuttle Publishing). The book, by Australia-based photojournalists Neville Coleman and Nigel Marsh, covers the length and breadth of the 'Wide Brown Land' and the diving around it in 348 detailed pages. Queensland and the Great Barrier Reef are given suitable prominence. One of the problems with covering Australia, however, is there are so many dive sites it is hard to do them justice. Diving Australia is well illustrated and comes with handy maps. Lonely Planet has released Diving & Snorkeling South Africa, its first guide to the diving in that country and in southern Mozambique (US$24.99, Lonely Planet Publications). The guide, written by veteran United States photojournalist Tim Rock and South African dive instructor Jean Pierre Botha, covers almost 100 sites. Underwater, South Africa offers ragged-toothed sharks, sea lions and great white sharks.