coastal environment. posidonia oceanica. beached spherical egagropyl, also called sea balls, beach balls or neptune balls

aegagropilas aegagropilae aegagropila aegagropile sea ball neputune agglomerates algae mediterranean coastal environment posidonia oceanica balls beach ballshaped beached coast sardinia southwestern sulcis natural ocean ovoid plant plants rolling sand spherical surf wind beaches egagropiles egagropyl neptune grass seagrass also called