Nautical Shell and Seaweed Diorama, 19th Century Consign Now DeptFine Arts, Maritime ArtsSizeOverall 11 ¼ in. x 12 ¾ in. Nautical Shell and Seaweed Diorama, 19th Century, a basket assortment of various species of seaweed and different seashell specimens. Overall 11 ¼ in. x 12 ¾ in. Please note that this auction has ended. Click here for an overview of this auction.