The California Sea Hare (Aplysia californica) as the name implies, is found along the coast of California, USA and northwestern Mexico (including the Gulf of California). The California Sea Hare can usually be found in the intertidal photic zone, at depths of less than a foot, to around 65 feet where they graze on red […]

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The Pen And Ink Nudibranch (Polycera atra) known to tropical fish keeping enthusiasts as the Orange Spike Polycera or Sorcerer’s Nudibranch has been encountered from Cape Arago, Oregon, USA, to Bahía Estero de Coyote (on the Punta Eugenia peninsula, just south of Bahía Tortugas), Baja California Sur, Mexico. The Pen And Ink Nudibranch is usually […]

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The Berghia nudibranch (Berghia stephanieae) is one the more common species of miniature sea slugs found throughout warm and temperate waters of the Atlantic Ocean, Carribbean, and Mediterranean seas. In North America, the Berghia nudibranch is one of the most commonly sold Aeolid nudibranchs in the fish keeping hobby. Huge populations are annually collected from […]

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Caramel Nudibranch (Glossodoris rufomarginata) known to tropical fish keeping enthusiasts as the White Margin Sea Slug is found in tropical Indo Pacific waters from localities as far apart as Tanzania in Africa and Mayotte in the Indian Ocean. From Sri Lanka to Polynesia, the Caramel Nudibranch is considered to be a relatively common species. They […]

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Glossodoris sibogae is a less common species of sea slug found in the tropical Pacific Ocean that is known in Indonesia, Fiji, and more commonly in French Polynesia. Similar in shape and coloration to Glossodoris atromarginata, there is no sure way to differentiate the two species without dissection of the animals to examine their teeth.  […]

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Glossodoris atromarginata  known to tropical fish keeping enthusiasts as the Dark Margin Glossodoris is found in Australia, Thailand, Japan, and most of the other tropical and subtropical Pacific and Indian Oceans throughout the world. Synonymous with Doriprismatica atromarginata, Glossodoris atromarginata is a peaceful species that spends all of its waking hours searching out and feeding […]

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The Blue Velvet Nudibranch (Casella atromarginata) known to tropical fish keeping enthusiasts as the Blue Velvet Sea Slug or Head Sheild Sea Slug is found in the Western Pacific and Indian Oceans. The Blue Velvet Nudibranch is a peaceful, mostly nocturnal species that spends all of its waking hours searching out and feeding on flatworms.  […]

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