Sealife guideThe vermillion sea starMediaster aequalis

Last updated on 08/20/2024 at 08:58 PM
Taxonomy
  • Common name: Vermillion sea star
  • French name: Etoile de mer vermillon
  • Scientific name: Mediaster aequalis (Stimpson, 1857)
  • Family name: Goniasteridae
  • Order name: Valvatida
  • Class name: The starfish [Asteroidea]
Geographic range
The vermillion starfish is found in the cold waters of the northeastern Pacific Ocean. It is commonly encountered along the coast from Alaska in the north to British Columbia in the south.
The vermillion sea star (Mediaster aequalis)
The vermillion sea star (Mediaster aequalis) ©  | Dreamstime.com
Within the same family
Biscuit sea star (Peltaster placenta)
Biscuit sea star
(Peltaster placenta)
Necklace sea star (Fromia monilis)
Necklace sea star
(Fromia monilis)
Noduled sea star (Fromia nodosa)
Noduled sea star
(Fromia nodosa)
Discover also
Egyptian sea star (Gomophia egyptiaca)
Egyptian sea star
(Gomophia egyptiaca)
Long-spined sea urchin (Diadema antillarum)
Long-spined sea urchin
(Diadema antillarum)
Pin cushion sea star (Culcita schmideliana)
Pin cushion sea star
(Culcita schmideliana)
Purple sea star (Pisaster ochraceus)
Purple sea star
(Pisaster ochraceus)
Red starfish (Echinaster sepositus)
Red starfish
(Echinaster sepositus)
Red striped sea cucumber (Thelenota rubralineata)
Red striped sea cucumber
(Thelenota rubralineata)
Slate pencil urchin (Heterocentrotus mamillatus)
Slate pencil urchin
(Heterocentrotus mamillatus)
Stony sea urchin (Paracentrotus lividus)
Stony sea urchin
(Paracentrotus lividus)
The marine species from northeastern Pacific ocean
Banded guitarfish (Zapteryx exasperata)
Banded guitarfish
(Zapteryx exasperata)
Big skate (Raja binoculata)
Big skate
(Raja binoculata)
Glassy tunicate (Ascidia paratropa)
Glassy tunicate
(Ascidia paratropa)
Heart crab (Phyllolithodes papillosus)
Heart crab
(Phyllolithodes papillosus)
Spiny pink scallop (Chlamys hastata)
Spiny pink scallop
(Chlamys hastata)

Our latestUpdates

The blueface angelfish
Monday, March 2nd 2026
The blueface angelfish
The blueface angelfish is a very colorful fish of the tropical coral reefs of the Indo-Pacific, recognizable by its bright blue head and its bluish body finely reticulated with yellow.
The Atlantic tarpon
Wednesday, February 18th 2026
The Atlantic tarpon
The Atlantic tarpon is a large coastal fish that can grow up to 8 feet long and weigh over 330 pounds, with a silvery body covered in large, reflective scales. Known as the Silver King, it is famous for its spectacular leaps and fierce fight when hooked by sport fishermen.
The dugong
Friday, January 30th 2026
The dugong
Discover the dugong, a gentle “sea cow” of tropical waters. Learn about its habitat, diet, reproduction, morphology, and the threats facing this unique marine mammal.
Photo of the Day
Flabelline mauve (Flabellina affinis)
Flabelline mauve
(Flabellina affinis)