Galastropods

Galastropods, or, more commonly, Space Snails, are fauna that may be found in Astroneer. Following a chain of Missions the player will unlock all seven snail friends, one for each planet. Each snail provides a different buff, that requires feeding various hazardous flora seeds to activate. Feeding the snail their favorite seed activates the buff for 30 minutes, or 10 minutes if fed any other seed. The ring on top of the terrarium will be blue while the buff is active, and red while active but in the wrong slot on Princess, Bestefar and Enoki's terrariums, as they require being in either the backpack or on the Terrain Tool.

Galastropod Shells
Galastropod Shells can be found on every planet, with each planet having their unique shell type. They may be scanned to obtain Bytes, either directly or in a Research Chamber, or placed in a Shredder to obtain Scrap.

Trivia

 * Galastropod is a portmanteau of galactic and gastropod.
 * Each Galastropod has a species, based on the planet they are found on, each in the genus of Galastropoda. This is based on real world snails being part of the Gastropoda genus.