Sammanfattning
In the Kattegat the spring bloom is in a late stage. In the coastal Skagerrak the bloom is still developing and in the open Skagerrak it is just beginning. The bloom of the potentially toxic Chattonella sp. is no longer present. In the Baltic Sea the winter situation is slowly ending and the first signs of the spring bloom are seen. In the Arkona basin the spring bloom is developing and near its maximum.