nudibranch.org

Nudibranchs and other Sea Slugs

Another trip to Villa Markisa in Bali, Indonesia has provided more nudibranch species for the site.
We have finally produced our ID guide for Indonesia with amazing help and encouragement from Martha Kiser and Christiane Waldrich.

Indonesia Nudibranchs & Sea Slugs
Updated 17 September, 2025 - Additional species and taxonomy updates.

Irish Nudibranchs
Updated 29 February, 2024 - taxonomy update.

Kenya Nudibranchs & Sea Slugs
Updated 22 January, 2024 - taxonomy updates.

Maldive Nudibranchs & Sea Slugs
Updated 12 January, 2025 -  taxonomy updates.

Papua New Guinea Nudibranchs & Sea Slugs
Updated 14 January, 2025 -  taxonomy updates.

Philippine Nudibranchs & Sea Slugs
Updated 6 June, 2025 -  Additional species, identification and taxonomy updates.

Red Sea Nudibranchs & Sea Slugs
Updated 22 January, 2024 - taxonomy updates.

Scottish Nudibranchs
Updated 18 January, 2025 - taxonomy update.

Marine Flatworms

Updated 6 June, 2025 - Philippines - additional species added.

Crustaceans

Updated 31 Aug, 2022 - Indonesia - 3 additional species.