Today's rock pool find is the green creature in the centre of this shot and it is a sea anemone.
A close relative of coral and jellyfish, anemones are stinging polyps that spend most of their time attached to rocks on the sea bottom or on coral reefs waiting for fish to pass close enough to get ensnared in their venom-filled tentacles.
Their bodies are composed of an adhesive pedal disc, or foot, a cylindrical body, and an array of tentacles surrounding a central mouth. The tentacles are triggered by the slightest touch, firing a harpoon-like filament into their victim and injecting a paralyzing neurotoxin. The helpless prey is then guided into the mouth by the tentacles.
Amazing. The reflections are super too. I'm sure the pink stuff is similar to the " whatever it was" that grew where we used to find crayfish when we lived in South Africa. My friends used to sell them to my Dad for 2/6 ( just before the Rand came into being) .