Echinoderm Collection (page 4)

A pair of Purple sea stars (Pisaster ochraceus) climb on anemones in shallow water, beneath trees in Browning Pass, Port Hardy, Vancouver Island, British Columbia. Canada. North East Pacific Ocean

Photo showing detail of the underside and mount of a honeycomb sea star (Pentaceraster alveolatus) with two tiny shrimps (Periclimenes soror). Bitung, North Sulawesi, Indonesia

Crinoid (Oxycomanthus bennetti). Romeo Reef, Yillet, Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea

RF - Emperor shrimp (Periclimenes imperator) exploring alien-looking landscape of host sea cucumber (Bohadschia argus). Emperor shrimps are commensals on many hosts

Pair of Coleman shrimps (Periclimenes colemani) make their home in a fire urchin (Asthenosoma varium). The female is larger

Micraster coranguinum (Leske), shepherds crown echinoid
Shepherds crown echinoid (Micraster coranguinum Leske) preserved in flint. Specimen from the Cretaceous Upper Chalk, England

Conulus albogalerus (Leske), Shepherds Crown echinoid
Shepherds Crown echinoid preserved in flint. Found in Gravel derived from Cretaceous Chalk, Surrey

Picture No. 11072801
Yellow Sea Cucumber with feeding tentacles extended on Sea Squirt Pink Beach dive site, Padar Island, Komodo National Park, Indonesia. Yellow Sea Cucumber

Flint handaxe incorporating fossil echinoid
Cast of handaxe from Middle Gravels of Swanscombe, Kent. Loaned by Merseyside Museums; NHM E6870

The Giant sea cucumber (Parastichopus californicus) is found down the west coast from Alaska to Mexico; British Columbia, Canada

Close look in between the spines of the Crown-of-thorns starfish (Acanthaster planci); Hawaii, United States of America

Crown-Of-Thorns Starfish, Acanthaster planci, Hawaii, USA
Close look in between the spines of the Crown-of-thorns starfish (Acanthaster planci); Hawaii, United States of America

Detail of a crown of thorns starfish (Acanthaster planci), Hawaii, USA
Close-up detail of a crown of thorns starfish (Acanthaster planci); Maui, Hawaii, United States of America

Commensal Shrimp on Cushion Starfish, Hawaii, USA
At less than an inch long this commensal shrimp (Periclemenes soror) is difficult to spot on the convoluted surface of the cushion starfish (Culcita novaeguineae); Hawaii, United States of America

Rock boring Urchin, Echinometra mathaei, Hawaii, USA
A close look at a Rock boring urchin (Echinometra mathaei) also known as a burrowing urchin, Hawaii. This invertebrate grinds into solid limestone and excavates tubes

Starfish on coral, Fiji
A seastar (Fromia sp.) on a red fan of gorgonian coral; Fiji

Close-up of a starfish and wave on a beach, Maui, Hawaii
Close-up of a starfish and wave on a beach; Maui, Hawaii, United States of America

Sea Stars And Anemones Are Revealed By A Minus Tide; Cannon Beach, Oregon, United States Of America

Fiji, Lau Islands, Flatworm (Unidentified) Pink With Red And Yellow Around Edge

Hawaii, Maui, Rare Sighting Of A Blue-Spotted Sea Urchin (Astropyga Radiata)

Red Cushion Sea star (Oreaster reticulatus), Utila, Honduras

Globoblastus sp. a fossil blastoid
Blastoids are small echinoderms that consist of a stem, a calyx and arms. The calyx contained the soft body parts of the animal and is pyramidal to globular in shape

Starfish, Luidia scotti
Specimen collected by Robert Falcon Scotts British Antarctic Expedition 1910-1913, also known as the Terra Nova expedition

Dimerocrinus, fossil crinoid
Dimerocrinus, a small stemmed crinoid (sea-lily) of Silurian age. The long stem supports a 1.8 cm high crown mostly consisting of the arms employed in feeding

Common Starfish (Asteroidea), internal anatomy, cross-section

Single Sea Star

Yellow starfish on a sandy beach. South Australia

Fossil Sea Urchins, Echinoderms C017 / 3490
Plate from 18th century encyclopedia showing illustrations of various echinoderms, or fossil sea urchins. The group called cidaris (cidares) is a genus of pencil sea urchins

Cretaceous chalk seafloor
An artists impression of a Cretaceous (144 to 65 million years ago) hard chalk seafloor, where an ammonite floats above crinoids, sea urchins, brachiopods, molluscs, and a lobster

Plesiosaurus, Telesaurus, Ichthyosaurus, Pentacrinites, Ammo
Sheet 1 of a series of posters called Extinct Animals by Benjamin Waterhouse Hawkins c. 1862. This collection of marine reptiles lived during the Jurassic period between 200 and 145 million years ago

Clypeus ploti, fossil echinoid
Fossil echinoid also known as a poundstone from the Jurassic period Trigonia Grit, Aylworth, U.K

SEM of echinoderm steroem
A SEM of an example of stereom of an echinoderm (phylum which consists of 5 classes including starfish). Stereom is the structure formed by the fine networks of calcium carbonate which constitute

Chalk sea diorama
Diorama of Cretaceous (144 to 65 million years ago) sea floor chalk deposits, and various cephalopods

Purple / Ochre Sea Star - with Giant Green Anemone (Anthopleura xanthogrammica)
COS-3812 Purple / Ochre Sea Star - with Giant Green Anemone (Anthopleura xanthogrammica) in rock pool with other starfish Oregon - USA Pisaster ochraceus Bill Coster Please note that prints are for

Featherstar swimming
Featherstar (crinoid) swimming over a reef. Featherstars frequently swim over reefs to find a good spot for feeding. Photographed in Komodo National Park, Indonesia

Brittle Star - Blending into it's home on the soft coral this starfish is almost invivible - Papua New Guinea
VT-8849 Brittle Star - Blending into it's home on the soft coral this starfish is almost invisible Papua New Guinea Ophiothrix foveolata Valerie & Ron Taylor Please note that prints are for

Sea Cucumber - with Cuverian organs / Sticky threads ejected. toxic threads which stick onto a predator & are left
VT-2731 SEA CUCUMBER - with cuvierian organs / sticky threads ejected Family: Holothurian Class: Holothuridaea The Cuvierian organs / sticky threads are part of the digestive tract

Fossil Crinoid (Cephocrinitis) - Erfoud South Morocco - Devonian - 390 million years old
CAN-2456 Fossil Crinoid (Cephocrinitis) - Erfoud South Morocco Devonian - 390 million years old John Cancalosi Please note that prints are for personal display purposes only

Sunflower Star - In sandy rockpool Third Beach, Olympic National Park, Washington State, USA IN000109
COS-1433 Sunflower Star - In sandy rock pool Third Beach, Olympic National Park, Washington State, USA Pycnopodia helianthoides Bill Coster Please note that prints are for personal display purposes

This feather star (Order Comatulida) has attached itself to a sea fan (Order Gorgonacea)
AUS-559 Featherstar (Order Comatulida) attached to a sea fan (Order Gorgonacea). Great Barrier Reef Marine Park, Queensland

Clypeaster altus, a fossil echinoid
Clypeaster altus, 13 cm anterior to posterior, from the Miocene of Malta, oral view

Blastoidea; extinct stemmed echinoderm
Coloured lithograph by Ernst Haeckel from Kunstformen der Natur, 1899-1904. Date: 1904

Cystoidea; extinct stalked echinoderm
Coloured lithograph by Ernst Haeckel from Kunstformen der Natur, 1899-1904. Date: 1904

Fossil Holothurian or sea cucumber
Staurocystis quadrifasciata, 6.5 cm long, from the Silurian, Wenlock Limestone of Dudley in Worcestershire, England

Palaeocoma egertoni, a fossil ophiuroid
Palaeocoma egertoni, with arms 4.5 cm long, from the Jurassic of Dorest, England

Asterias gaveyi, a fossil starfish
Asterias gaveyi, the oral surface, with an arm stretch of 18 cm, from the Jurassic of Gloucestershire, England

Actinocrinites sp. a fossil crinoid
Actinocrinites has a calyx which is conical and elongated and a rigid, domed tegmen made of numberous small plates. The calyx is monocyclic, I.e. a basal circle of plates supports the radial circlet

Ailsacrinus prattii, 3.4 cm wide, from the Jurassic of Bath, England, showing the underside of the calyx and arms

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"Echinoderms: Fascinating Creatures of the Sea" Diving into the depths of the ocean, we encounter an extraordinary world filled with diverse marine life. Amongst them, echinoderms stand out as captivating creatures that never fail to amaze us. In Japan's Kagoshima Prefecture, a Male Leach's sea star steals the spotlight as it engages in broadcast spawning. With arms extended gracefully, it releases streams of sperm into the water, contributing to new life beneath the waves. This mesmerizing sight earned its well-deserved recognition as Wildlife Photographer of the Year 2022 - Underwater category winner. But let us not forget their ancient relatives who once roamed our oceans. Extinct marine reptiles ruled during a time long past, leaving behind remnants like crinoid fossils known as "Sea Lilies. " Discovered in Northern Germany from the Triassic period over 240 million years ago, these delicate fossils offer glimpses into Earth's prehistoric wonders. Moving forward to present-day marvels, we encounter sea cucumbers and starfish gracing sandy beaches worldwide. Their unique shapes and vibrant colors add charm to coastal landscapes while reminding us of nature's artistic touch. Delving deeper into history reveals St. Cuthberts Beads—a rosary crafted from crinoid columnals—an exquisite testament to human creativity intertwined with echinoderm beauty. Further exploration uncovers Pentrimites robustus and Tylocidaris clavigera—blastoids and sea urchins respectively—each showcasing intricate patterns etched by evolution itself. Venturing along rocky shores brings encounters with double spined urchins' anal sacks—a peculiar yet essential part of their anatomy that aids in maintaining balance within their watery habitat. As we journey across continents, common starfish grace Oxwich Bay in Gower South Wales UK while ochre & purple sea stars adorn Strawberry Hill State Park on the Oregon coast, Pacific Ocean, USA.