Neither, I think it is a plant.
yes
no
Although not their main food source, seaweed is part of the diet of carnivores like polar bears, arctic foxes and seals. Few fish feed on seaweed because it is difficult for them to digest. However, butterfish has seaweed as part of their diet. Parrotfish and the surgeonfish are also seaweed-eaters. Many crustaceans, invertebrate marine animals with an external skeleton, eat seaweed, including crabs, lobsters, crayfish, woodlice, pillbugs and krill. Mollusks such as periwinkles, a type of snails that live on the seashore, also feed on seaweed attached to rocks.
invertebrate - has exoskeleton
An invertebrate.
by hiding in seaweed by hiding in seaweed by hiding in seaweed by hiding in seaweed
seaweed seaweed seaweed
No, kale is not seaweed. Perhaps you mean "kelp" which is a seaweed.
It is an invertebrate 
no
A bullfrog is not an invertebrate; it has a spine.
The octopus is an invertebrate... It has no skeleton.
seriously? wow....... did you pass 4th grade? invertebrate
Answer Seaweed is not an animal of the sea's it's a plant.