Haddon’s Anemone – one big sea anemone

Sea Anemones are soft-bodied polps which lack a skeleton and are typically bottom dwellers attached to the seafloor by a muscular basal disc. However, some are burrowers without a basal disk and some are even swimmers using their tentacles for locomotion.

The Haddon’s Anemone, Stichodactyla haddoni (Saville-Kent, 1893) is one of the larger anemones you will find in Moreton Bay.

Measuring generally 500mm across sometimes 800mm they are very attractive given the ends of the tentacles are green, yellow, even pink but also sometimes grey. These tentacles are very short and sticky. Even though tentacles are designed to catch prey amongst them you may find the attractively patterned 20mm long Pacific Clown Anemone Shrimp, Periclimenes brevicarpalis.

As Haddon’s Anemones are found on muddy-sand in the intertidal and subtidal zones they are often seen all around Moreton Bay by the Moreton Bay Seagrass Watch teams (QLD Museum, 2011).

Haddon's Anemone

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