Thank you so much! I find quite a few on the beaches. Figured it was fishing gear of some kind. After I got your note I did some searching and sure enough! I appreciate you taking the time to help me out, that’s very kind of you. Reply
theoutershores 
Slime eel trap tunnel. US fishery off the coast. Eels sold in Korea I hear.
Ian
Thank you so much! I find quite a few on the beaches. Figured it was fishing gear of some kind. After I got your note I did some searching and sure enough! I appreciate you taking the time to help me out, that’s very kind of you.