Tree Anemone

Overview

The tree anemone, also known as the "hell's fire anemone," is a highly venomous sea anemone recognized for its potent sting, which can cause severe skin ulcers in humans. Unlike many other anemones, this species is known for its ability to rapidly retract its entire body into the substrate when threatened.

Appearance

This anemone features a distinctive, broccoli-like appearance due to its complexly branched, fractal-like tentacles. These tentacles, which can reach lengths of 10 to 20 cm, are arranged in whorls and are often colorless or light-colored. The oral disc typically displays radiating white stripes interspersed with small dark spots. The body column is generally smooth with longitudinal ridges and remains largely buried in the sediment, leaving only the elaborate crown of tentacles visible.

Distribution & Habitat

Native to the Indo-Pacific region, the tree anemone is found in various environments including sandy sea floors, rubble-covered bottoms, and seagrass beds near coral reefs. It is typically observed living singly, with individuals spaced widely apart from one another rather than in dense colonies.

Biology & Behavior

This species is a predator that uses its specialized stinging cells, or cnidocytes, to immobilize prey. While it is generally solitary, it is occasionally found hosting commensal shrimp. Due to its powerful sting and specialized burrowing behavior, it is considered unsuitable for aquarium environments.