If so, the closest living relatives are the choanoflagellates, which are heterotrophic, single - called eukaryotes having the same
structure as some sponge cells.
Not exact matches
Thus, the
sponge - marble
structure can serve
as a sort of geometrical model of the complementarity of continuous and discontinuous aspects of reality — specifically the complementarity of physical fields (
sponge phase) and material objects (marbles phase).
The millions of long, thin, sharp silica spicules in Rossella racovitzae
sponges, three - foot high brown organisms that inhabit the Ross Sea in Antarctica, give the
sponge structure and shape,
as well
as ward off predators.
Marine
sponges build intricate skeletons with an internal
structure made of glass needles by using enzymes known
as silicateins that act both
as catalysts that assemble the glass and
as physical templates to form the material into needle shapes.
Also to be seen are coral encrusted rock formations with interesting
sponge structures, sea fans and tunicates.The north side is the deepest at 80 ft and the most fun,
as you're swimming through a canyon with almost totally vertical walls.