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  2. Oreaster reticulatus - Wikipedia

    en.wikipedia.org/wiki/Oreaster_reticulatus

    Oreaster reticulatus, commonly known as the red cushion sea star or the West Indian sea star, is a species of marine invertebrate, a starfish in the family Oreasteridae. It is found in shallow water in the western Atlantic Ocean and the Caribbean Sea.

  3. Strongylocentrotus purpuratus - Wikipedia

    en.wikipedia.org/wiki/Strongylocentrotus_purpuratus

    The sea urchin is the first animal with a sequenced genome that (1) is a free-living, motile marine invertebrate; (2) has a bilaterally organized embryo but a radial adult body plan; (3) has the endoskeleton and water vascular system found only in echinoderms; and (4) has a nonadaptive immune system that is unique in the enormous complexity of ...

  4. Echinoderm - Wikipedia

    en.wikipedia.org/wiki/Echinoderm

    Echinoderms possess a simple digestive system which varies according to the animal's diet. Starfish are mostly carnivorous and have a mouth, oesophagus, two-part stomach, intestine and rectum, with the anus located in the centre of the aboral body surface. With a few exceptions, the members of the order Paxillosida do not possess an anus.

  5. Wikipedia:Featured pictures/Animals/Echinoderms - Wikipedia

    en.wikipedia.org/.../Animals/Echinoderms

    Directory of featured pictures Animals · Artwork · Culture, entertainment, and lifestyle · Currency · Diagrams, drawings, and maps · Engineering and technology · Food and drink · Fungi · History · Natural phenomena · People · Photographic techniques, terms, and equipment · Places · Plants · Sciences · Space · Vehicles · Other ...

  6. Ambulacrum (zoology) - Wikipedia

    en.wikipedia.org/wiki/Ambulacrum_(anatomy)

    Sea urchin shell, or 'test'. Each white band is the location of a row of tube feet; each pair of white bands is called an ambulacrum There are five such ambulacra; the penta-radial symmetry reveals a kinship with sea stars. In zoology, an ambulacrum is an elongated area of the shell of an echinoderm in which a row of tube feet are arranged.

  7. Astrophyton - Wikipedia

    en.wikipedia.org/wiki/Astrophyton

    Astrophyton muricatum, the giant basket star, is an echinoderm found in shallow parts of the tropical western Atlantic and throughout the Caribbean Sea and the Gulf of Mexico. [1] It is the only species in the genus Astrophyton. [2] During the day, it curls up into a tight ball shape to protect itself from predators.

  8. Culcita (echinoderm) - Wikipedia

    en.wikipedia.org/wiki/Culcita_(echinoderm)

    These are very particular stars, plump and pillow-shaped, more or less pentagonal. Their five arms have waned to only obtuse angles (and sometimes rounded off or truncated).

  9. Thromidia gigas - Wikipedia

    en.wikipedia.org/wiki/Thromidia_gigas

    Thromidia gigas is a species of starfish in the family Mithrodiidae. It was described by Ole Theodor Jensen Mortensen in 1935. [1] It lives in the Indian Ocean off the coast of eastern South Africa and southern Madagascar. [1] [2] This species is probably the largest echinoderm in terms of bulk, and may exceed 13 pounds (5.9 kg). [3]