A biological treasure lay undiscovered in the shallow tidal flats off Chek Jawa, on Pulau Ubin, Singapore's last remaining nature paradise. Protected by sandbars, Chek Jawa's beach is home to a prodigious variety of marine life, visible only at the lowest of tides - and only for a few hours each time. The tiny village on Ubin island was itself unknown to most people in Singapore, but in 2001, it became the focal point of a public effort to reverse a government plan to redevelop the island. This is a well-produced account of the natural history of the area and the conservation campaign.