When they attach themselves you are immune to radiation

They protect you from the stupid nameless

And the radiation

How to tame lamprey

Fish basket

That is literally it

These exist in real life but don’t usually attack humans

If you get a leech/lamprey just stand on a fire or get a tribemate to stab it off, if this will not work simply check your tames for leeches

Find a small pond in the biulimnecent area then place a fish basket. There are so many you would probably get one.

If you want a danger noodle as a pet, catch one in a fish basket and just plop the noodle in a little body of water and watch him swim - TiredTamer

Put a fish basket and wait for a leech to get in it but u can also tame. Coelacanths and mega perrannna!

You can find Lamprey in the Hidden Grotto cave if anyone was curious.