Heterocentrotus mamillatus - Wikipedia
Heterocentrotus mamillatus, commonly known as the slate pencil urchin, red slate pencil urchin, or red pencil urchin, is a species of tropical sea urchin from the Indo-Pacific region. [2] [page needed]
Meet Ha‘uku‘uku‘ula‘ula the Red Pencil Urchin
May 12, 2019 · Ha‘uku‘uku‘ula‘ula is the Hawaiian name for the red pencil urchin. This brightly colored sea urchin has short, blunt spines that are not sharp and poisonous like other sea urchin species....
Red Pencil Urchin (Heterocentrotus mamillatus) | Red Sea Creatures
Heterocentrotus mammillatus, also known as the slate pencil urchin, red slate pencil urchin, or red pencil urchin, is a species of tropical sea urchin found in the Indo-Pacific region.
Heterocentrotus mamillatus - Red pencil urchin - Snorkeling Report
Red pencil urchin Distribution: from the Red Sea and Eastern Africa to Southern Japan , Hawaii (where it is abundant), French Polynesia and New Caledonia . Spots where Heterocentrotus mamillatus has been spotted by snorkelers
Conservation Case Studies - Echinoderms | AMNH
Red Slate Pencil Urchin: Unstable Spines . This specimen is a pencil urchin, Heterocentrotus mamilatus, with thick light gray-pink rounded primary spines with two beige rings at the tip. Secondary spines in between the primary ones have a peg-like truncated shape. On the oral side the spines are flatter, smaller, and semi-triangular in cross ...
Sea urchin - Wikipedia
Red sea urchins were originally thought to live seven to ten years but recent studies have shown that they can live for more than 100 years. Canadian red urchins have been found to be around 200 years old. ... Some species of sea urchins, such as the slate pencil urchin (Eucidaris tribuloides), are commonly sold in aquarium stores.
Heterocentrotus mamillatus, Red pencil urchin - SeaLifeBase
Occurs in shallow water reef areas at depths of 0 to 25 m (Ref. 800). Found on a reef crest (Ref. 97449). Favors depressions on the reef associated with pinnacles, corals or between rocks (Ref. 102370). Members of the class Echinoidea are gonochoric. Fertilization is external.
Section: Urchins: Group: Common Urchins: Species: …
Triggerfish and large wrasses will eat these urchins. Sometimes brown in color. Experience Level: Intermediate. Diet: Omnivore. Aquarium Environment: Reef or fish-only aquarium. Coral Safe: With caution. Fish Safe: Yes. Invertebrate Safe: With caution.
Sea Stars, Urchins, and Relatives - Smithsonian Ocean
Sea urchins, too, thrived during the Paleozoic Era. They emerged during the Ordovician, a period that lasted from 485 million years ago to 444 million years ago. But at the end of the Permian a massive extinction killed off over 90 percent of marine life. Sea urchins were one of the hard-hit groups and only a few species survived.
Ha’uke’uke ‘Ula’ula — Red Slate Pencil Urchins of Hawaii
Dec 25, 2007 · Red slate pencil urchins are some of the most visual stunning sea urchins in Hawaii. Known as “ha’uke’uke ‘ula’ula” in Hawaiian, they are vibrant red in color and can reach 10 inches in diameter from spine to spine.