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2. Patiria miniata - Wikipedia

   en.wikipedia.org/wiki/Patiria_miniata

   Patiria miniata, the bat star, sea bat, webbed star, or broad-disk star, is a species of sea star (also called a starfish) in the family Asterinidae. It typically has five arms, with the center disk of the animal being much wider than the stubby arms are in length. [2] Although the bat star usually has five arms, it sometimes has as many as ...

3. Echinoderm - Wikipedia

   en.wikipedia.org/wiki/Echinoderm

   This ancestral organism adopted an attached mode of life with suspension feeding, and developed radial symmetry. Even so, the larvae of all echinoderms are bilaterally symmetrical, and all develop radial symmetry at metamorphosis. Like their ancestor, the starfish and crinoids still attach themselves to the seabed while changing to their adult ...

4. Bubble curtain - Wikipedia

   en.wikipedia.org/wiki/Bubble_curtain

   A bubble curtain in Florida used to stop debris entering the marina. A bubble curtain is a system that produces bubbles in a deliberate arrangement in water. It is also called pneumatic barrier. The technique is based on bubbles of air (gas) being let out under the water surface, commonly on the bottom.

5. Starfish - Wikipedia

   en.wikipedia.org/wiki/Starfish

   Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (/ ˌ æ s t ə ˈ r ɔɪ d i ə /). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class

6. Sea urchin - Wikipedia

   en.wikipedia.org/wiki/Sea_urchin

   Sea urchins move by walking, using their many flexible tube feet in a way similar to that of starfish; regular sea urchins do not have any favourite walking direction. [13] The tube feet protrude through pairs of pores in the test, and are operated by a water vascular system ; this works through hydraulic pressure , allowing the sea urchin to ...

7. Luidia senegalensis - Wikipedia

   en.wikipedia.org/wiki/Luidia_senegalensis

   Zinc, and to a lesser extent nickel, lead, cadmium and silver accumulate in the body wall and the pyloric caeca (parts of the gut which project into the arms). [5] In the Indian River Lagoon, a small brown polychaete worm sometimes lives on the surface of the sea star as a commensal. There may be several on one sea star and they probably ...