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Not closely: spiders are arachnids (a type of chelicerat), octopuses are cephalopods (a type of mollusk).

However it is believed that all living things do have an ultimate common ancestor, no matter how much they have diverged from each other.

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7y ago
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8mo ago

Spiders and octopuses belong to different phyla: spiders are arachnids (part of the arthropod phylum) and octopuses are cephalopods (part of the mollusk phylum). While both groups are invertebrates, they are not closely related through common ancestry.

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Q: Are spiders and octopuses related through common ancestry?
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