A very small red tentacled, grey/purple bodied anemone found on the side of a small sea snail which was feeding on seaweed in a tidal rock pool.
Identified by https://www.mm2.net.nz/posts/163
Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria. They are named for the anemone, a terrestrial flower. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. Anthozoa often have large polyps that allow for digestion of larger prey and also lack a medusa stage. As cnidarians, sea anemones are related to corals, jellyfish, tube-dwelling anemones, and Hydra.