[ Rey has never heard of a bear before, let alone a platabear. But she latches onto something that does sound familiar. ]

Jakku had something like that... The Sinking Fields in the Goazon Badlands. If you landed your ship there, it would sink right into the sand. Come to think of it, there was something similar on Pasaana, too.

[ Does every desert planet have sinking sands? ]