Synonyms|6Antonyms|0|Broader|9Narrower|4Related|8
5
kelp forest(forest, animal, fauna, species)
5
tundra(nature, animal, fauna, species, marine)
3
antarctic tundra(nature, animal, fauna, marine, invertebrate)
3
continental shelf(fauna, species, organism, shelf, biota)
3
coral reef(animal, fauna, species, reef, biodiversity)
3
intertidal zone(fauna, species, biodiversity)
1
littoral zone(nature, fauna, species)
1
sea
0
echinoderm
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APASmart Define. (2015). sea urchin thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sea_urchin/thesaurus/broader
ChicagoSmart Define. 2015. "sea urchin thesaurus" https://smartdefine.org/sea_urchin/thesaurus/broader (accessed September 26, 2026).
HarvardSmart Define 2015, sea urchin thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sea_urchin/thesaurus/broader>.
MLASmart Define. "sea urchin thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/sea_urchin/thesaurus/broader>