Invasive moss?

H.R. Waller
Date: 25 September, 2008
Time: 2000
Location: The WU Crew boathouse
Weather: Chilly, 62 degrees, overcast.
Today at the boathouse, I took extra notice of the green, sticky blanket of moss spread over the water surrounding the house and dock. It wasn't obvious anywhere else on the river, only in places where there was a structure protruding onto the water. In the crevase between the boathouse and the shore, the entire surface was covered in green. It's strange how this plant doesn't need any soil to thrive like it does. I wonder if it causes any harm to the river life? Also why is it only close to the shore, and not floating along in the middle of the river? It is thick enough to support various bits and pieces of other flora that have fallen into the river, and then have stuck in place, held by the mossy substance. It gives the appearance of a thick soup with many different ingredients poking out everywhere. The individual pieces of clover-like leaves that make up the mossy substance hold onto each other as if forming a defensive unit against an enemy.