|Ancient Greek sea Serpent Crested War Helmet|
|messapian sea monster helmet|
These helmets have a striking "Periscope" illustrated facing either direction and each one with a striking jagged crest or fin (mane) down the mid-back. There may be small "Ears" (or horns) on the head but more importantly the heads and necks are in the same approximate proportion to each other as my statistical norm for modern reports (Which is also just about Oudemans' average of his reports and Dinsdale's average estimates for the Loch Ness Monster) and moreover the eyes are about midway along the top, insisted on in some reports and proper for a Plesiosaur. The arrangement is also interesting because it is anther design implying "The head end is like the tail end" by making the mirrored-head/neck the same as in the Northwest coast Sisiutl.
I am reading those odd trefoil terminations as flippers and not as the ends of short tails, although they do resemble the common stylization of "dragon's tails" more usually shown later on.