The body forms of nudibranchs vary greatly. Because they are opisthobranchs, unlike most other gastropods, they are apparently bilaterally symmetrical externally (but not int… See more

In the course of their evolution, nudibranchs have lost their shells, while developing … See more

Nudibranchs are hermaphroditic, thus having a set of reproductive organs for both sexes, but they cannot fertilize themselves. Mating usually takes a few minutes, and involves a … See more

All known nudibranchs are carnivorous. Some feed on sponges, others on hydroids (e.g. Cuthona), others on bryozoans (phanerobranchs such as Tambja, Limacia, Plocamoph… See more