Gruta Lagosteira is a local cave in Peniche and Berlengas. It brings together a cave dive in the berlengas area known as the “lobster cave”, commonly visited by divers as a pass-through point. at the entrance, the first chamber features cracks where conger eels and triggerfish are often seen. a larger second chamber can be explored with a flashlight. both chambers have large air pockets at the ceiling. two cave chambers can be explored; a flashlight is useful, and there are air pockets at the ceiling. Shore access keeps the logistics direct and simple. It suits divers who want careful route-finding and good orientation from a local operator.