Nudibranch. Nudibranch, or true sea slug, Chromodoris kuniei, on the seabed. The gills (breathing structures) are seen at upper left and the two rhinophores are seen at lower centre. The rhinophores are used to sense chemicals in the water. Nudibranchs (meaning naked gills) are sea slugs without a shell or true gills. They are carnivorous, feeding on invertebrates, and may store toxins from their prey for future use. The bright colours of sea slugs warn predators that they are poisonous. This sea slug is found in the tropical western Pacific ocean.

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