yes
Sand dollar itself is a live hard echinodermic creature.
An octopus can hide its body in the sand or mud.
An octopus can hide its body in the sand or mud.
An octopus can hide its body in the sand or mud.
An octopus can hide its body in the sand or mud.
they dont really hide in sand, just they search the ocean floor for things to eat. it looks like they hide in sand because their wings move the sand upwards which then lands on their back.
An octopus can hide its body in the sand or mud.
An octopus can hide its body in the sand or mud.
An octopus can hide its body in the sand or mud.
A fictional creature, not real.
sand dollars
Not all snakes, but there are certain desert species that will.