If you’re staying around the area of Peniche you should definitely go on this boat tour to Berlenga island. Go for a visit to the caves or a guided hike and maybe even snorkeling.
“The care and friendliness of the staff was exceptional. The trip was very well organised (with care for COVID safety) but the staff went the extra mile to make sure we understood (as the only English speakers on the boat) and made the whole experience fun and relaxed. Thank you so much - we recomend you to everyone interested in a Berlinga trip!”