This is being sold on Amazon for 29,225 yen. I love sea slugs and bought this a while ago, but I haven't used it much and it's been stored away. Please refrain from purchasing if you are sensitive. Three leading scientific experts on sea slugs and nudibranchs have collaborated to create a comprehensive guide for divers to the Indo-Pacific region. Terrence Gosliner, Angel Valdés, and David Behrens previously collaborated on the publication of "The Sea Slugs of the Indo-Pacific" in 2008. The new book, "The Identification of Sea Slugs and Nudibranchs - Indo-Pacific," is an improved version of that research, with over 500 additional photographs and species. The Indo-Pacific is the largest tropical ocean in the world, stretching from the Indian Ocean coast of Southern Africa and the Red Sea to the central Pacific islands of Hawaii, Easter Island, and the Marquesas Islands. This region supports the most diverse marine fauna of any place on Earth for most animal groups. Sea slugs and other nudibranchs are no exception to this rule. Approximately 3,000 species of opisthobranchs are described worldwide, and at least 40% of them are found only in the tropical Indo-Pacific. This book describes 1,953 Indo-Pacific opisthobranchs, including many undescribed species. The evolution of chemical defenses and the loss of shells have led to the evolution of the bright color patterns that characterize the diversity of sea slugs. Vibrant colors advertise the presence of toxicity or unpalatability. Other species have evolved remarkable strategies to blend into their surroundings, taking cryptic paths, or mimicking specific prey. All of this beauty and color is fully displayed in 2,248 photographs across 408 pages.