Wow... putrification odor from that would not only carry, but LINGER. Imagine taking a stroll on the sand and accidently finding a sudden soft spot that might act like quick sand !?!

Hey, RD. How's tricks?
If they left the carcass below the high tide line it would sink and not be a hazard. It would be a health hazard before then, though. There are several cars and trucks out on, or in, Padre Island where the waves washed the sand out from under them. Years back, someone was excavating a Spanish ship at the shore line and when the Feds turned greedy, digging stopped and the boat disappeared, again.
Oh, you know... life is. LOL
Leave it to the gubment to muck up a perfectly good plan.
I can only imagine the stench. LOL I remember once as a kid, dad had found a "floater" seal pup while he was out fishing. Someone had pulled it from their nets... and, for some reason, dad wanted the hide... so, he brought it home and was skinning it out back of the house. The stench within 50' in every direction was horrible. And, we're talkin' a little, 30 lbs. carcass. He skinned it, scraped/tanned it... but, it then lived in the basement for a number of years before it finally got tossed. Every time I saw that hide, I remembered that overpowering stench. LOL