The algae is bringing anything but green to certain Treasure Coast businesses.
Blue-green algae is clearly visible, but now that the smell is here, hotels and restaurants say this could be their worst Summer ever.
"Sad very sad. It's just dead," says Irene Gomes at the Driftwood Motel in Jensen Beach.
"This is going to be a worse Summer than 2013, no doubt."
The green slime with its awful stench is costing her three customers this week. She says that's about a $1,500 loss. A hit that could be devastating.
"They want to know the conditions of the water and when you tell them you're not going to lie to them, I hope you're not going to lie to them, they're not coming."
With less people staying on the water, that means less eating at waterfront restaurants.
"It's not good. It's nasty stuff out there," says Allison Steinborg at Hogsnappers in Stuart.
Outdoor seating at the restaurant is right next to Frazier Creek, where the algae is forming.
"Hogsnappers is one of the best seafood restaurants in the area and you're looking out and you see the green algae," says customer Larry Percoco.
Under Governor Scott's emergency declaration, he says he will devote every available resource to find solutions for the families and businesses in this area.