Kids play in ocean foam that flooded Dublin neighborhood streets

This overflow of sea foam in Loughshinny, North Dublin, looks like snow at first glance. On this windy day, the sea foam blew all the way into the streets of a neighborhood near the shore. In the video, you can see kids running around and playing in the sea foam, having the time of their lives.

Sea foam forms when seawater containing dissolved organic matter, like algae, plankton, or decomposing plants, is hit hard by wind and waves. The water traps air and forms foam, which can build into thick patches along the shoreline. Most sea foam is a sign of a healthy and productive marine environment.

Sea foam can sometimes be unsafe, though, so it's important to know when to avoid it. Seafoam can be toxic to humans when it is associated with pollution or harmful algal blooms. During events lik