Many invertebrate organisms have begun to be included in protected species lists, and in addition to its various existing catalogues of endangered vertebrate animals, the World Conservation Union is also compiling lists of endangered invertebrates, saltwater fish species and even microorganisms.
許多無脊椎生物已開始被含括入保育名單，國際「自然保育聯盟」在現有各種脊椎動物名錄之後，也在列舉無脊椎動物、海洋魚類、甚至微生物的名冊。