Yet another "what is this thing?" thread

Our back yard looks out over the Atlantic Ocean on the North Shore of Boston. We see sailboats, power boats, jet skiers, kayakers (but not, AFAIK, @kayaker) and fishing boats, including lobstermen who leave lobster pots and their distinctive float markers in our “back yard.”

But we’ve never seen one of these before:

https://photos.app.goo.gl/pyE7L54GmE2Fg8FB9

https://photos.app.goo.gl/nHNHFCbMpLxHxCiQ6

(Sorry they’re fuzzy, but they were taken with my phone at max zoom.)

It looks like a big inner tube you might use to float down a river, except it appears to be triangular, not circular. I’m guessing it’s about 3-4 feet across. It hasn’t moved since 8/30, so it’s anchored, not random flotsam.

My first thought was a raft or floating platform a scuba diver might use, but there’s no red diver’s flag, and it’s been there more than two days.

Any ideas?

Not really, but it looks somewhat like a coffin.

It may have “crossed oceans of time to find you.”

Possibly a bumper, with a line still attached. Free floated to the shallows, where the line is now hooked on something.

Maybe an anchorage? I’ve seen people drop a chunk of concrete with chain attached to a float, creating an anchorage point.

Could it just be a small inflatable dinghy? Something like this:3D Tender 230 Superlight Twin Air Inflatable Dinghy Black 2.3m - Pirates Cave Chandlery

Edit: or a toy/leisure version of same, if it really is as small as OP estimates

Or this: Rapala FT 120 Float Tube Belly Boat + Foot Pump Flippers Repair Kit Carry Bag | eBay

It’s the ocean’s version of a black helicopter. Tighten your foil hat!

If you’re concerned, contact the Coast Guard and ask them to check it out.

Maybe somebody’s tryin’ ta ketch hisself a SHARK!
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