id slime

Anyone have an ID on this algae. I’ve looked in a lot of places but I think it’s either cyano or Dino’s. It’s not red witch makes me think Dino’s but I’m not sure. 0B33EB2F-7EE7-4ACD-ACB9-AF4D76AECFCC by Thomas Howell posted Feb 22, 2018 at 12:57 PM

been trying to get rid of the stuff for months it's on the sand and rocks