International Nudibranch Day | |
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![]() Pectenodoris trilineata (Nudibranch) | |
Observed by | a growing number of enthusiasts |
Type | International |
Date | 6 March |
Next time | 6 March 2025 |
Frequency | annual |
International Nudibranch Day (IND) is an informal day of celebration of the sea slug. Nudibranchs are soft-bodied molluscs that show an incredible diversity of colours and shapes, and are found in all oceans, from the tropics to Antarctica. These aesthetically-pleasing invertebrates are popular with tidepoolers, divers and scientists alike. Nudibranchs are one kind of sea slug, with the whole group broadly known as opisthobranchs.
The day has been observed by some scientists for a number of years, but is not yet widely known.
History
editMeetings of an informal group of opisthobranch scientists have occurred in the past:
1st International Workshop of Opisthobranchs- Menfi, Italy, 1999
2nd International Workshop on Opisthobranchia- Bonn, Germany, 2006
3rd International Workshop on Opisthobranchs- Vigo, Spain, 2010
4th International Workshop on Opisthobranchs- Santa Cruz, USA, 2012
5th International Workshop on Opisthobranchs- Porto, Portugal, 2015
Planned
6th International Workshop on Opisthobranchs- Perth, Australia, 2018