👉 Leptonereis is a type of animal that belongs to the order Cetacea, which includes whales and dolphins. It is primarily found in the oceans and can be found in various habitats such as tropical seas, cold waters off continents, and even in deep-sea environments. The term "Leptonereis" refers specifically to a species of whale known for its unique appearance, including long, pointed tusks that are used to catch prey, and its distinctive blue coloration.