Book excerpt: Our coastline extends from the tropical waters of the north to the temperate waters in the south, and attracts thousands of swimmers, sailors, skindivers, fishers, naturalists and beach walkers. This heavily illustrated and informative book identifies those animals in the sea that might cause injury and which can, by taking precautions, be avoided. These include jellyfish, sea anemones, corals, octopus, squids and cuttlefish. A glossary of technical terms and a comprehensive index will help readers to quickly access this information.