Marine biologist Alan Deidun recently shed light on an intriguing natural phenomenon occurring along the Maltese seabed—seaballs formed by the Neptune grass (Posidonia oceanica).

In a social media post, Alan explained that these fibrous ‘sea balls,’ technically referred to as Egagropili, are formed from the roots and rhizome fragments of this vital seagrass. The balls take shape as they are rolled and tumbled by waves along the seabed, gradually compacting into their distinctive spherical forms.

These seaballs are more than just a natural curiosity; they play a significant environmental role. As they move along the ocean floor, they trap plastics and other debris, acting as ‘bioabsorbents’ in the marine ecosystem. This function highlights the importance of Posidonia oceanica not only in maintaining underwater habitats but also in mitigating some of the impacts of marine pollution.

Alan Deidun's post emphasises the interconnectedness of marine life and how even the simplest natural formations can contribute to the health of our oceans. As Malta continues to face environmental challenges, understanding and preserving these natural processes becomes even more crucial in the fight to protect marine biodiversity.

Did you know about this interesting fact?