A white coloring. That would help it blend into the environment, hiding it from prey and pretotors alike.
Air flows from high pressure to low pressure.
The only kingdom without cell walls is 'The fungi kingdom'
The cell wall is a tough and rigid layer that surrounds some types of cells. It is located outside the cell membrane and its main function is to provide rigidity, strength, protection against mechanical stress and infection. It can also provide the cell with limited plasticity that will prevent the cell from rupturing due to turgor pressure.
Fish are aquatic vertebrates with gills, appendages, if present, in the form of fins, and usually a skin with scales of dermal origin. They are the most ancient and most diverse of clad vertebrata
