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  • Japanese sea cucumbers (Apostichopus japonicus) are found in waters of the northwest Pacific, with a range comprising Japan, Korea, China, Sakhalin, the Kuril Islands and Alaska. This species generally comes in three color morphs: red, green, black. This individual is a rare albino, measuring about 20cm in length. Apostichopus japonicus is eaten in many areas. It is listed as Endangered in the IUCN Red List.
    apostichopus-japonicus-endangered-sp...tif
  • This is a male leopard sea cucumber (Bohadschia argus) engaged in broadcast spawning. Having raised itself above the substrate, the sea cucumber sent streams of sperm into the water.
    bohadschia-argus-sea-cucumber-spawni...tif
  • This is a male Holothuria (Mertensiothuria) leucospilota black sea cucumber engaged in broadcast spawning. Nearby sea cucumbers of the same species were broadcasting gametes into the water at the same time. Other invertebrates, including Clypeaster japonicus urchins and Spirobranchus giganteus polychaete worms were also spawning. Photographed in Kagoshima Prefecture, Japan.
    holothuria-mertensiothuria-leucospil...tif
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Tony Wu Underwater Photography

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