The Fitter - Planet Ectora

Some animals on Ectora are able to fit where predators cannot follow. Tall, narrow false fish called fitters can slip through the slits in a certain family of puzzle sponges to hide inside. No predator wants to tear apart these puzzle sponges for such a small meal because they are poisonous to the touch and release a highly caustic fluid when broken. Only the fitters are partially immune.

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Written by Daniel Noe, WayOutLife.com