Six weeks later, the wreck is covered with a 9 slimy layer of 10 algae, but it is still recognizable as a ship.

In cycled lithologic sections of argillaceous dolomite and coarse texture algae dolomite, reservoir and non-reservoir alternately appear, which make pores and caves growing along the layer.

The walls of some algae differ, e. g. the silica boxes enclosing diatoms, and the calcareous layer on the cell walls of calcareous algae.