Not very compressable foam.
Or say if something else slightly porous was the subject, it doesn`t have to be foam.
I am curious about the water pressure effect and depth of water in which it has an
effect on items of near neutral bouyancy.
I realise the greater the depth, the more pressure is on a item, but would it be
2 feet, 5 feet, 15 feet etc that it would affect the bouyancy to a noticeable degree.
Like if it was suspended 1 foot of the bottom in depth of 3 feet, what would happen
if depth was 15 feet instead of 3 feet.
Thank`s.