The waters of the Gulf of Finland turned green near St.Petersburg, Russia. They say it is because of the algae and the abnormally high temperature of the air and water this year. Like, if your pool gets warm and no chlorine is added, it becomes infested with green algae like this, too.
Scientists say it’s dangerous too – the algae releases toxins when it dies, which is dangerous to mammals and birds.
The recent deaths of ducks in St.Petersburg lakes are connected to this algae, too.
The toxins released by the algae can be dangerous for humans too – they affect the human liver.