Hard to tell given position and decomposition, but teeth and body shape makes me think some kind of eel.

I'd agree, could be some sort of eel; but not a moray, given it appears to have had pectoral fins. OR aquatic xenomorph...

It isn't really an aquatic xenomorph though... right?

My dead (possible) fangtooth snake-eel needs an agent.

For more on this story go to: https://twitter.com/preetalina/status/908048991534895104?ref_src=twsrc%5Etfw&ref_url=http%3A%2F%2Fmashable.com%2F2017%2F09%2F14%2Fstrange-sea-creature-on-texas-beach-identified%2F