摘要: ObjectiveThe" Grand Sud" area in Madagascar is a remarkable temperate marine enclave within a tropical province. From the early 1990s, shell collector discover several dozen new species in the region, mainly collected at the tide marks on the coast or as by-products from the villager's spiny lobster fisheries in shallow water from 5 to 30 metres deep. These discoveries prove the originality of the region and that it has hardly been explored. Its special hydroclimatic context could indicate the existence of a significantly endemic zone. These discoveries are located on the coasts of the Anosy and Androy regions of Madagascar, which the Madagascans called" Grand Sud", or Atimo Vatae, which gave the cruise its name. The cruise on RV Antéa cruise was an integral part of an expedition which had three other parts:(i) a leg on shore based at Fort Dauphin, followed by (ii) a leg on shore at Lavanono, with an imitation …