closeup macro shot the nudibranch halgerda during leisure dive sabah borneo

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Closeup and macro shot of the nudibranch Halgerda batangas during a leisure dive in Mabul Island, Semporna, Tawau, Sabah. Royalty Free Stock Photo

Closeup an macro shot of the nudibranch Halgerda sp during leisure dive in Sabah, Borneo. Royalty Free Stock Photo

Closeup and macro shot of nudibranch Phyllidia ocellata during leisure dive in Sabah, Borneo. Royalty Free Stock Photo

Closeup an macro shot of the nudibranch Halgerda sp during leisure dive in Sabah, Borneo.

Nudibranchs are hermaphrodites. They contain both male and female reproductive systems. During copulation, they line up their genitals which are on the right side of their body. Each nudibranch receives sperm from the other. When the nudibranchs have finished mating, it takes quite an effort to pull the genitals apart.