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Figure 5.Ophiocoma aethiops. A dorsal view. Scale bar = 15 mm B dorsal view of the arm C ventral view of the arm D dorsal view of the disk E ventral view of the disk F jaw. Scale bar = 5 mm. Ophiocoma alexandri G dorsal view H dorsal view of the arm I ventral view of the arm. Scale bar = 15 mm J dorsal view of the disk K ventral view of the disk. L jaw. Scale bar = 5 mm.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

Karen Connolly, from Casey Dunn's Invertebrate Zoology (Biol 0410) course at Brown University, tells the story of how echinoderms (starfish, sea urchins, and their relatives) can change the stiffness of their skin at will.Music by Scott Joplin (freemusicarchive.org/music/Scott_Joplin/Frog_Legs_Ragtime_Era_Favorites/09_-_scott_joplin_-_original_rags).Visit creaturecast.org for more stories about the unexpected world of Biology.

What reef animal comes in a rainbow of crazy colors, can throw out its innards to immobilize predators, then creep away and regrow a brand-new stomach? It’s the sea cucumber, prized as a gastronomic delight by some cultures and beginning to yield some of its secrets to scientists. Follow host Ari Daniel Shapiro from a Chinatown market to the reefs of Fiji to learn more about this amazing creature. read moreDuration: 4:10Published: Wed, 23 Feb 2011 14:02:25 +0000

Description: Goosefoot Starfish Anseropoda placenta Item Type: Image Title: Goosefoot star Species: Anseropoda placenta Site: Atlantic -- North Sea -- West of Shetland -- WhirlwindNorth Sea -- West of Shetland -- Whirlwind Site Description: Seafloor Depth (m): 184 Latitude: 60 deg 17' 01" N Longitude: 3 deg 50' 19" W Countries: UK -- West of Shetland Habitat: Benthic Rig: Borgsten Dolphin Project Partners: Hurricane Exploration (HEX), Subsea 7 ROV: Pioneer 027 Deposited By: Miss Moira MacLean Deposited On: 11 November 2010

Description: This large seven-armed starfish was rarely encountered during fieldwork Whirlwind and not seen at Lancaster. It is most likely Luidia ciliaris indentified from the photographs by the number of arms (seven), the long tube feet, velvety orange/brown texture and pale coloured spines on the margins of the arms. It is found on sandy or gravel seabed down to 400 m depth off European coasts with Shetland near the northern limit of its range. They may lie buried in the sediment and are predators of other echinoderms such as brittle stars and asteroids. They may grow up to 60 cm in diameter. Item Type: Image Title: Luidia ciliaris Copyright: SERPENT Species: Luidia ciliaris Site: Atlantic -- North Sea -- West of Shetland -- WhirlwindNorth Sea -- West of Shetland -- Whirlwind Depth (m): 184 Latitude: 60 deg 17' 01" N Longitude: 3 deg 50' 19" E Countries: UK -- West of Shetland Habitat: Benthic Rig: Wilphoenix Project Partners: Hurricane Exploration (HEX), Fugro ROV: Super Spartan Deposited By: Dr Andrew Gates Deposited On: 05 January 2015

Synaptula lamperti is not the primary subject of the video clip; the primary subject is Xestospongia testudinaria (Barrel sponge). Coral Sea, Duration 16 seconds

South Pacific Ocean, Shot at night, Duration 13 seconds

Coral Sea, Duration 12 seconds