Think of Cleantec Infra's Aquatic Weed Harvester as an underwater lawnmower that can not only gather weeds, but also excessive amounts of trash, in waterways of all sizes. How does it work? Well, its conveyer belt lowers itself into the water and then proceeds to cut, collect, and then store the trash or weeds until it needs to be discharged. The Harvester is just one of the many ways humans are trying to combat the growing threat of sea pollution. Click here for the first image in today's viral picture gallery. Continue reading for the five most popular viral videos today, including one showing what it's like to live on the world's most crowded island.