Glass-Bottom Boat Trips to the Medes Islands Activity · Torroella de Montgrí, Baix Empordà, Girona Image of Torroella de Montgrí, not of the place itself. Glass-bottomed boat trips, run by several companies, to observe the marine life of the Illes Medes reserve without getting wet; the reserve has been protected since 1983 and is now part of the Parc Natural del Montgrí, les Illes Medes i el Baix Ter. From the boat you can see underwater meadows of Posidonia oceanica and the caves where red coral grows, once heavily harvested but whose extraction is now banned. Photo: Kippelboy (CC BY-SA 3.0) What to see and do in Torroella de Montgrí