Seaweed
kelp, seaweed.....
fish,seaweed, and salt
Seaweed such as kelp.
The air bladders would hold the main stem of the weed erect, Seaweed, being a shallow water plant, would be able to have more of it's leaves struck by the sun.
If the test is a success, both will benefit (scientists->money and tested human->money or anything that will help them) but if the test if a failure, then only the scientists benefit from it (knowledge) [for the tested human->possible chance for disorders, nothing, or death]
Once covered by the tide, the air-filled bladders will float upright, allowing the seaweed to benefit from sunlight.
by hiding in seaweed by hiding in seaweed by hiding in seaweed by hiding in seaweed
The human race goes on.
nothing
seaweed seaweed seaweed
A benefit of using good human relations is that you are able to get more output. The human relations will ensure that people are motivated in the right way and efficiency is enhanced.