Science Online is a great resource for this information. (You may have access through your local library ) According to Science Online an octopus is described as, "An eight-armed marine invertebrate (animal without a backbone). Octopuses are found in all oceans, from the water's edge to depths of at least three miles (4,800 m)" Starfish (now known as sea stars) are also an invertebrate, and as noted by Science Online, "creatures of the class Asteroidea in the phylum Echinodermata." According to Science Reference Library, Echinodermata is further described as, "…have[ing] arms or spines that radiate from the center of their body."
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∙ 8y agoWiki User
∙ 6y agoIt is a invertebrates because a octopus has no backbones.
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∙ 15y agoYes, they are.
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∙ 8y agoan octopus has no backbone
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∙ 12y agoInvertebrates.
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∙ 13y agoNo, they do not have a backbone.
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∙ 13y agoyes
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∙ 13y agoyes
sponge , starfish and octopus
All insects are invertebrates, as are crustaceans such as lobsters and crabs. Clams, octopus, squid, and jellyfish are all invertebrates.
No, octopus are invertebrates
Starfish are not reptiles. They are invertebrates.
Well starfish have 5 sides, and an octopus has 8 legs that squirm around.
An octopus.
A starfish has no back bone so therefore is an invertebrate
Squid, octopus, worms, snails, caterpillars, crab, starfish, jellyfish, spiders, sponges, lice, ants, mites, and flies have no backbones.
They're both invertebrates.Octopus are invertebrates.
The octopus, along with its cousins the cephalopods, are invertebrates.
An octopus is an invertebrate.
no they don't have a backbone. so they are a invertebrate.