LOL, Yes Box Fish' that's right I remember they would call those things Box Fish. ... We still get them here' but they are not good mates for seahorses. They're cute and we get a few types. I understood you when you said about back in the 70's and ellgrass recovering from a disease.
Just so you know because of the new laws on dumping here in New York the water has gotten' a lot cleaner and we sort of are getting everything found along the East Coast from Carolina and Florida here on Long Island.
You can look down from some piers and see Butterflies and angels, file fish, seargent majors ect. ... Take a trip this coming summer. ...
Next time you go out' to the Cape' do this, Bring a mask and snorkel and just find a sort of Cove Area, some where water comes in and circles around a bit before the tides change' float around in 3 to 6 feet of water and you will find the seahorses. ... Stay away from area with a lot of sea grass and just snorkle around looking for little loose patches of sea grass away from the larger area of sea grass. This area is known for having minows ect., and the seahorses stay away at times but not that far away' The minows and grass shrimp attract everything from kelly fish to spearing, snapers and jelly fish. ...