Pseudo-atoll Pseudo-atoll A pseudo-atoll, like an atoll, is an island that encircles a lagoon, either partially or completely. A pseudo-atoll differs from an atoll as established by several authorities, such as how it is formed (not by subsidence, nor by coral). It is considered a preferable term to "near-atoll". There is a need for rigorous definition of "pseudo-atoll" before it can be accepted as a general term. Alexander Agassiz gave the term pseudo-atoll to "any ring-shaped reefs not formed as a result of subsidence". while Norman D. Newell and J. Keith Rigby called such reefs non-coral. and "We conclude that almost-atoll
Dongsha Atoll National Park a circular atoll in diameter, with tropical monsoon climate. It is administered under Qijin District, Kaohsiung City. Seagrass Beds are well formed in the atoll and in adjacent waters, providing rich bio-diversities of marine life from fish, jelly fish, squid, sicklefin lemon sharks, and rays to rarer sea turtles, Dugongs, and cetaceans (dolphins and whales). Recovery of green sea turtles has especially been noted. Possible use of the atoll as a breeding ground by lemon sharks have been speculated due to the numbers of infants that have been discovered. Dongsha Atoll National Park The Dongsha Atoll National Park () is