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
Gaafu Dhaalu Atoll Gaafu Dhaalu Atoll Gaafu Dhaalu (also known as Southern Huvadhu Atoll or Huvadhu Atholhu Dhekunuburi) is an administrative district of the Maldives formed by the southwestern section of Huvadhu Atoll. It was created on February 8, 1962 when Huvadhu Atoll was divided into two districts. Gaafu Dhaalu corresponds to the Southwestern section of this large natural atoll, south of the line extending between the channels of Footukandu and Vaarulu Kandu. The capital of this region is Thinadhoo (formerly known as Havaru Thinadhu). There are 153 islands in this district, 10 of which are inhabited. This district is located about 340