Caribbean beaches have been under attack this year, not by people or even sharks, but by the proliferation of Sargassum seaweed.

The monthly report by the University of South Florida’s Optical Oceanography Lab recorded 24 million tons of Sargassum in the Atlantic Ocean in June affecting beaches from Puerto Rico to Barbados.

We speak with Chuanmin Hu, Professor of Oceanography at the University of South Florida’s College of Marine Science who assists in producing the report about the uptick in Sargassum and how it's affecting not only economies but also the local people.