brittle star
Five-armed ocean dweller
A brittle star is a marine animal related to starfish, with a central disk and five long, slender arms that move in a snakelike fashion.
Unlike starfish, their arms are sharply distinct from the body and break off easily when threatened—hence "brittle." They inhabit ocean floors worldwide, from shallow waters to deep sea.
Ocean's solid base
- benthicOf the sea bottom
- tidal poolCoastal depression holding seawater
- coral reefCalcium carbonate marine ecosystem
- sedimentParticles settling in liquid
detritivore · ocean · deep sea · substrate · kelp forest · rocky shore · sandy bottom · seagrass
Spiny marine echinoderm
- sea cucumberElongated marine echinoderm
- sand dollarFlat burrowing echinoderm
- starfishFive-armed marine invertebrate
- radial symmetryArrangement around central axis
tube feet · ossicles · invertebrate · marine biology · test · spines
Surgical removal by oneself
- wound healingRestoration after injury
- tissue repairBiological wound healing process
- recoveryRegaining what was lost
- regrowthGrowing back again
morphogenesis · renewal · adaptation · detachment · regenerative · repair
Oral opening
- stomachDigestive organ below chest
- gonadsGamete-producing glands
- bursaeAnatomical friction reducers
- photoreceptorsCells sensing light
sinuous · coiling · undulating · serpentine · writhing
seafloor
Ocean's solid base
- benthicOf the sea bottom
- tidal poolCoastal depression holding seawater
- coral reefCalcium carbonate marine ecosystem
sediment · detritivore · ocean · deep sea · substrate · kelp forest · rocky shore · sandy bottom · seagrass · continental shelf
sea urchin
Spiny marine echinoderm
- sea cucumberElongated marine echinoderm
- sand dollarFlat burrowing echinoderm
- starfishFive-armed marine invertebrate
radial symmetry · tube feet · ossicles · invertebrate · marine biology · test · spines
self-amputation
Surgical removal by oneself
- wound healingRestoration after injury
- tissue repairBiological wound healing process
- recoveryRegaining what was lost
regrowth · morphogenesis · renewal · adaptation · detachment · regenerative · repair
mouth
Oral opening
photoreceptors · sinuous · coiling · undulating · serpentine · writhing
brittle starsea star
Five-armed marine invertebrate
starfish · Asteroidea · sea urchin · sand dollar · sea cucumber
brittle starsea cucumber
Elongated marine echinoderm
sea slug · jellyfish · sea anemone · coral · sponge
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