Sargassum seaweed is an algae that grows in the Sargasso Sea and eventually drifts into the Gulf of Mexico, growing as it makes its journey. The currents return much of the seaweed to the Sargasso Sea, but some drifts into the nutrient-filled waters off the Texas Coast where it thrives. According to Texas Beach Watch, advisories are in effect, the beaches are still open. An … [Read more...] about Galveston surprised by seaweed