"When you look at it the first time you may think it is a crocodile, but it is certainly not," said Swansea University expert Dan Forman.
You may have seen the reports on the news before or read about them in the newspapers, and if not, I have listed a few I'd found on the web. The only pattern I see, is that the creatures look as though they are in the latter stages of decomposition when found, although possibly not in all cases, but in a good number. I just find it fascinating, that a beached creature like this doesn't get seen earlier, so we could ascertain a greater understanding of what these creatures would have looked like alive. There might even be a rational explanation for these sightings and what they actually are, but I will have to look further to find those answers.
she found a decaying fish on a beach in Texas City.
https://www.boredpanda.com/mysterious-sea-creature-washed-up-beach-texas/
said he found the strange sea creature after going boating at Wolf Island National Wildlife Refuge in Golden Isles, Georgia
http://www.newsweek.com/mystery-sea-creature-washes-georgia-beach-850622
An unidentified sea creature has washed ashore in Indonesia's Maluku province.
https://www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=11854752
A huge hairy sea creature has been found washed up on a beach in the Philippines
It's pretty scary when you think about what's in those big wide unexplored oceans out there. What really lurks beneath the hulls of ships and boats? What really passes underneath the bellies of swimmers and surfboards, someone knows, but it ain't me.
(Pictured is above is a Jelly fish)