It's been pretty consistent for a while, but the beach bars and restaurants that are now operating on Orient Beach rake this stuff up each morning so if you rent chairs and an umbrella at places like Kontiki, Bikini Beach, or Kakao they should be clear. I'm not sure, but I even think Kontiki has a tractor or something similar that cleans the sea grass up each morning. And, the further south you go onto the clothing optional beach the less it becomes.