What land animals are sessile?

Question

I'm at a complete loss and I can't find anything on the web, so any help would be very appreciated.

LAND not water

Answer 1

This was an interesting quest for me, since I, too, could not think of any land creatures which are sessile. Finally, I found a reference in a U.S. Fish and Wildlife entry in the Federal Register. I've included the link, but here is the paragraph which answers your question: "Western land snails ... are ``exceptional indicators'' of ecosystem health. They are present in many environments, have specialized habitat needs, and are essentially sessile (permanently attached or established; not free to move about). Land snails respond quickly and are vulnerable to disturbances or anthropogenic habitat change."
So, there's your answer, western land snails.

Answer 2

On reefs and rocky shores, many animals are sessile, meaning that they spend their entire adult lives fixed in one place. These species, which include sponges, barnacles, and mollusks, as well as reef-building corals themselves, typically spend the early part of their lives as drifting larvae, before settling on a solid surface and changing shape. Sessile animals are common in aquatic habitats because it is relatively easy for them to collect food, which typically is pushed in the animal’s direction by water currents.
By contrast, very few sessile animals have evolved on land.

Answer 3

I don't know of any completely sessile land animals. (I've got a fat cat who comes pretty close, but that's probably not going to help you much.) Even sloths and snails are mobile, no matter how slow. Trapdoor spiders are motionless when waiting for prey, but move quickly when pouncing and are capable of moving to a new burrow. So-called 'ant lions' come close to being immobile, but even they *can* move if need be.