Quicksand

Quicksand is a hazard taking the form of loose, wet sand. It slows anything that walks into it but also pulls them downwards, sealing their fate if they are not quick to escape.

=In fanon games=

In Pikmin V
Quicksand is introduced in Pikmin V, found primarily in Gravel Desert. Orange Pikmin are not slowed by and do not sink in quicksand, and Winged Pikmin can simply fly over it. Deep mud is a functional variant of quicksand.