Diese glubschigen durchsichtigen Geldinger, welche zu Hauf angeschwemmt wurden, sind möglicherweise die Überbleibsel von Moon Jellyfishes (Aurelia sp.), vgl. Zitat aus http://natureontheedgenyc.blogspot.com/2012/08/moon-jelly-washes-up-near-ny-harbor.html: In fact, what I had turned up was a recently deceased Moon Jellyfish, one of the most common jellyfishes to be found in the ocean near New York and New Jersey. Normally, when these jellyfish wash up on a beach they appear as a disk-shaped, hardened plate. The most durable remains of this strange sea creature. Gone are their numerous long, thread-like arms called tentacles, which branch out and float underwater to entangle free floating plankton in the water column, which they eat.