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  2. Sea urchin - Wikipedia

    en.wikipedia.org/wiki/Sea_urchin

    The name urchin is an old word for hedgehog, which sea urchins resemble; they have archaically been called sea hedgehogs. [ 6 ] [ 7 ] The name is derived from the Old French herichun , from Latin ericius ('hedgehog').

  3. Diadema antillarum - Wikipedia

    en.wikipedia.org/wiki/Diadema_antillarum

    Diadema antillarum, also known as the lime urchin, black sea urchin, or the long-spined sea urchin, [2] is a species of sea urchin in the family Diadematidae. This sea urchin is characterized by its exceptionally long black spines. It is the most abundant and important herbivore on the coral reefs of the western Atlantic and Caribbean basin.

  4. Toxopneustes pileolus - Wikipedia

    en.wikipedia.org/wiki/Toxopneustes_pileolus

    Toxopneustes pileolus, commonly known as the flower urchin, is a widespread and commonly encountered species of sea urchin from the Indo-West Pacific. It is considered highly dangerous, as it is capable of delivering extremely painful and medically significant stings when touched.

  5. Mystery solved: Scientists ID Caribbean sea urchin killer

    www.aol.com/news/mystery-solved-scientists-id...

    For marine scientists, it was deja vu: Another die-off swept through the region in the 1980s and slashed sea urchin populations by around 98%. Last year, sea urchins in the Caribbean started ...

  6. Diadema (sea urchin) - Wikipedia

    en.wikipedia.org/wiki/Diadema_(sea_urchin)

    It is one of the most abundant, widespread, and ecologically important shallow water genera of tropical sea urchins. It is found in all tropical oceans, although is ubiquitous in the Indo-Pacific region, where it inhabits depths down to 70 m. However each species inhabits roughly separate areas of ocean. Long-spined urchins Diadema, London Zoo.

  7. Paracentrotus lividus - Wikipedia

    en.wikipedia.org/wiki/Paracentrotus_lividus

    Paracentrotus lividus is a species of sea urchin in the family Parechinidae commonly known as the purple sea urchin. It is the type species of the genus and occurs in the Mediterranean Sea and eastern Atlantic Ocean.

  8. 10 Animals That Live Longer Than You’d Expect - AOL

    www.aol.com/10-animals-live-longer-d-153011551.html

    Red sea urchins age like they’re in a perpetual spa day. Some live over 200 years without showing signs of aging. In fact, a 100-year-old sea urchin is just as spry as a teenager.

  9. Sea urchin die-off threatens reefs from Florida to Caribbean ...

    www.aol.com/news/sea-urchin-die-off-threatens...

    These days, long-spined sea urchins are known as the gardeners of the sea. They tend the algae on the coral reefs they call home, making sure it never overwhelms their hosts. Spotting one on the ...

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