Sepiama is a Mollusk monster that is superficially similar to a cuttlefish. Its overall body structure is similar to Calamarica and Octargon with blue-gray skin but differs from the other two as the overall length of its arms and tentacles are shorter and has an ovular mantle with fins running down the entire length of the mantle on both sides. The two tentacles are furnished with denticulated suckers, with which they secure their prey. The eyes contain large, W-shaped pupils.