Well instead of roots, they have special suckers called 'holdfasts' which cling to rocks so they don't get ripped out of rock pools, even in big waves so I guess you could call that one.
What's The Adaptation Of Seaweed?
They have air bladders that allow them to reach sunlight and attain sugars produced by photosynthesis. That's all I got...
Clings to the rocks
They produce air bladders to float
Sushi
I don't know I'm trying 2 find out 2 just choose something different