Snakelocks Anemone

Overview

The snakelocks anemone is a common and distinctive sea anemone found throughout the Mediterranean Sea and the eastern Atlantic Ocean. It is well-known for its long, sinuous tentacles that rarely retract, often giving it a flower-like appearance in shallow, sunlit waters.

Appearance

This species typically features a smooth, tubular column that is reddish-brown or greenish in color. It is most recognizable by its mass of up to 200 long, flexible tentacles, which are often bright green with striking purple or fuchsia tips. The green coloration is largely due to the presence of symbiotic algae living within the tentacle tissues, though the anemone may appear duller or greyish if these algae populations decrease.

Distribution & Habitat

Snakelocks anemones are primarily found in shallow, well-lit environments, including intertidal rock pools, rocky seabeds, and on submerged vegetation like seagrass or kelp. While they are generally sessile, they can detach their basal disc to relocate to more favorable feeding sites. They are highly tolerant of varying conditions, including turbid water and elevated temperatures.

Biology & Behavior

This anemone maintains a unique dual-energy strategy: it is a capable predator that captures small fish and invertebrates with its venomous tentacles, while also relying on energy produced by its symbiotic algae through photosynthesis. It is also known to be heliotropic, meaning it can track the sun to maximize light exposure for its symbionts. Several small marine animals, such as certain crabs and prawns, often live commensally among its tentacles for protection.