Today the beaches at Carrie Bow Cay are covered in Sargassum seaweed. It all washed ashore overnight. However, we did have an inkling that it was on the way. Yesterday we could see big mats (~10-15m long) of it floating around the island. Surprisingly, yesterday was really calm, and we haven’t had big winds or waves since about Friday. So I do not know what caused it to arrive yesterday. Other scientists on the island reckon that no-one knows where it comes from. If any of you have an idea, let me know!