Tortoiseshell Tortoiseshell Tortoiseshell or tortoise shell is a material produced from the shells of the larger species of tortoise and turtle, mainly the hawksbill sea turtle, which is an endangered species largely because of its exploitation for the material. The large size, fine colour and unusual form of the hawksbill's scutes make it especially suitable. The distinctive patterning is referred to in names such as the tortoiseshell cat, several breeds of guinea pig, and the common names of several species of the butterfly genera "Nymphalis" and "Aglais", and some other uses. Tortoiseshell was widely used from ancient times in the West
Sea Turtle Association of Japan, Kuroshima Research Station 30 years’ research into the nesting of sea turtles, especially confirmation of the nesting of the hawksbill sea turtle for the first time in Japan, in addition to confirming the nesting of green sea turtles. Their research regarding acanthasters and corals deserves special mention. In 2005, they sponsored the Japanese Sea Turtle Conference, which is held every year at the location of sea turtles nesting rookeries in Japan. Sea Turtle Association of Japan, Kuroshima Research Station Kuroshima Research Station started in 1973, under the name of the UnderwaterPark Foundation, Yaeyama Underwater Park Research Institute, for the purpose of managing and