Take a pair of scissors. Don't yank the stipe off the rocks. You'll not only kill the seaweed and prevent it from growing again next year, but you're also going to end up with sand and flakes of rock in your harvesting basket. Cut the blades off above the stipe, leaving a little of the blade so that it can grow again.
Tops tips on harvesting seaweed. Want to gather your own sea veggies from the prolific waters of your nearest and cleanest ocean tide pools? Here's some tips to get you started .