Crekra III

Crekra III
A planet-wide, deep ocean mostly free of ice, except at the poles. 
Every seven years, billions of spongy creatures hatch all at once and begin to swarm, eating everything in their path. Symbiotic creatures live on their skin, keeping away pests and attackers.
There are regular formations of plants that look like abandoned fields.
Habitability: 30%
Size: 2
Industry: 2
Science: 4
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Category:Crekra system