The reason why scores of plants including alder and sycamore trees are being removed from Swansea marina Non-native plants are being removed to protect the habitat for wildlife Swansea marina after some of the non native plants have been removed (Image: City and County of Swansea) Want the latest news from Swansea sent straight to your inbox?Invalid EmailSomething went wrong, please try again later. Don't miss anything from your city! Sign up for regular updates When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice.