Heard only, not seen. Called several times.
Some kind of manta ray or sting ray
Found it next to the sidewalk in Ash Creek Estuary.
Shell had washed ashore - Superstorm Sandy had moved quite a bit of debris around this landscape.
Found dead on the beach. Note the barnacles and slipper limpets adhering to the shell.
They were all dead.
Merostomata is the name given to a grouping of the extinct Eurypterida (sea scorpions) and the Xiphosura (horseshoe crabs). The term was originally used by James Dwight Dana to refer to Xiphosura only, but was emended by Henry Woodward to cover both groups.