I haven't tried the kelp noodles, but I just wanted to say that if the texture is like the shiritake (yam noodles), then to me, the texture is like
a sauteed mushroom. A little spongy, but biteable... meaning, you don't have to chew it forever to get it to break apart.
I love the shiritake noodles... and they're on sale right now at Lucky's (at least here in NorCal) for 1.49 a bag.
Anyway, just sayin'.