The Tube Anemone is characterized by its long, slender body encased in a tube made of mucus and sand particles. Its crown of tentacles, which can reach up to 30 centimeters in diameter, is the most noticeable feature. The tentacles are divided into two sets: the outer tentacles are long and slender, often brightly colored in shades of pink, orange, white, or purple, while the inner tentacles are shorter and paler. Unlike other anemones, Tube Anemones do not attach themselves to rocks or hard surfaces; instead, they burrow into sandy or muddy substrates.
Tube Anemones are found in a variety of marine environments, from shallow coastal waters to deeper regions up to 200 meters. In Gozo, they are commonly found in sandy or muddy areas, as well as in seagrass beds. They thrive in areas with gentle currents, which help bring food particles within reach of their tentacles.
Tube Anemones belong to the order Ceriantharia, a unique group of anemones distinct from the more commonly known Actiniaria. They are solitary and nocturnal, often retracting into their tubes during the day and extending their tentacles to feed at night. The tube, which can be several meters long, provides protection and stability in the substrate. Tube Anemones are also known for their bioluminescence, with some species capable of producing light to attract prey or deter predators.
Tube Anemones are carnivorous, feeding primarily on plankton, small fish, and other tiny organisms that drift by in the water column. They use their sticky tentacles to capture prey and bring it to their mouth, located at the center of the tentacle crown.
While Tube Anemones have few natural predators due to their stinging tentacles and reclusive nature, they can occasionally fall prey to larger fish, crabs, and sea stars. Human activities, such as trawling and habitat destruction, also pose significant threats to their populations.
In Gozo, Tube Anemones can be observed at various dive sites, particularly those with sandy or muddy substrates. Popular locations include the renowned Gozo Blue Hole and Coral Cave near Dwejra. These sites offer divers the chance to witness the Tube Anemone’s vibrant display of tentacles amidst a backdrop of Gozo’s stunning underwater scenery.
Dive into Gozo and explore the fascinating world of the Tube Anemone, an enchanting marine species that highlights the island’s rich biodiversity and adds a unique touch to every diving adventure.
