Kelp harvestmen are large sectents from Clavimaria.
Like all harvestmen, this species has a round, stout body from which 8 extremely long legs emerge. This is the largest species of its kind, and each leg can be up to 60 metres long.
To breath, they have many spiracles in their ventral side. Their enormous size requires a large amount of oxygenated water, and as such their spiracles are able to actively respire. Their openings bear muscular funnels which pump in and out the water that may be filled with oxygen or ashgas.
Their exoskeleton is thick and rugose, allowing small algae to grow on it without harming the creature. In fact, they serve as cammouflage and may even produce noxious poisons that deter parasites and predators.