Rosia Bay has become a favourite specimen collecting site for the Master’s in Marine Science programme. This specialist field study saw participants get in the waters around Gibraltar’s south district to collect two species of algae, both invasive. The first Asparagopsis armata has been in Gibraltar waters since the 19th century, having first been described around Australia in 1855. The other species being studied on this occasion was Rugulopteryx okamurae, a far more recent arrival being originally from the north Pacific and first seen in the Med in 2002.
As with the mussels which were the subject of our recent visit to the Small Boats Marina, the focus of the study on this occasion was not so much the algae themselves, but what lives on and among them.