Coquina Hydroid Lovenella gracilis

They are colonial animals that form erect colonies, on hard surfaces using a hydrorhiza, stem-like structure. They have a symbiotic relationship with Donax clams. The clam provides a substrate for the L. gracilis to attach to while the hydroid protects the clam from predators using its nematocysts. Found in the western Atlantic Ocean.

Tima formosa

Strongly tangled Tima formosa. The aquarium staff said "They will become free at some time.".

派手に絡まったギヤマンクラゲ。 従業員曰く「そのうちほどけます。」。