Cellphone video on Tuesday captured what appeared to be several boaters bursting balloons and dropping trash in the water near a marina in Coconut Grove.

The video posted by MMG Outboard Division, a group that says it is “proud to protect and share the beautiful waters we call home,” was shot just after 4 p.m. at Bayshore Landing Marina.

Two people on board the boat are seen popping balloons and dropping them into the water.

“As we passed them and voiced our disagreement, we were ignored and they continued to walk away without a care in the world,” the band said in their post.

It is unclear whether the boat was privately owned or rented for a party. Miami-Dade police said they are investigating the case.

Esteban Bruna, a yacht broker, shot the cellphone video.

“I was pretty upset about it, it’s our bay, it’s our livelihood,” Bruna said. “I was there when they put them up and at first I didn’t really think about it, but I guess at the end of the day and they started to walk away and let them all in in the water, I was shocked.”

A witness said the balloons may have been part of a marriage proposal. Bruna said he confronted people.

“I said to them, ‘are you serious, is this something you’re going to do now?’ [They] “It was horrible to see what they were doing to sea life and waterways by throwing all those balloons in the water.”

Florida Fish and Wildlife Conservation Commission officials said the balloons can be mistaken for food by sea turtles and other marine animals, and if eaten can lead to internal injury, starvation And the dead.

Balloon releases have been illegal in Florida since 1989.