Fresh kelp help - SE Alaska
Found very nice looking kelp at low tide at Outer Point. Took it home & put it in water - thinking I should add salt? - I want to do something with it, but realized I've no earthly idea what I'm doing. Any suggestions - Google foo has failed me so far.

* Further research and comments indicate it might be 'sea lettuce' ?

To be soaked in fresh water for a couple of hours, then spread out to dry in the shade?

Any other options/suggestions?