Croatia’s coast just got a new (and not-so-welcome) resident: a fast-spreading, ochre-colored brown alga from the Indian Ocean. This seaweed is taking over the seabed, pushing out native species and threatening the whole ecosystem. Experts are asking divers and locals to help spot and report it before things get worse. Wild how one plant can cause so much chaos, right? Invasive species are a global headache—costing billions and messing with food chains everywhere. #Science #InvasiveSpecies #Croatia