Barnacles
An arthropod
Nope - it's a member of the Jellyfish family, not an arthropod.
although an octopus has eight arms or tantacles
An arthropod's main features are the segmented body, an exoskeleton made from chitin, and joint appendages.
insect of course.
a hydra as a polyp is not sessile but when it grows to be a hydra it is sessile
they are sessile
Sessile means attached. So a sessile organism is attached to a substrate.
Tapinoma sessile was created in 1917.
hibiscus is pedicle flower
Vagrant moves, Sessile doesn't
Most sessile animals are of the phylum Mollusca.
Sessile organisms are immobile. So. I can't think of any animals. But plants are sessile. Edit: Corals (related to anenomes) and sponges are good examples of sessile animals, the latter has a motile larval stage before it settles on a substrate and becomes sessile.
An arthropod
A barnacle could be described as being sessile.
sessile means without stalk
Vectors of the arthropod.