Available exclusively online from 19 to 30 June, the flash sale offers a single ticket price for all ages, valid for any visiting time and date. Tickets purchased during the campaign can be used until 31 July 2026.

The initiative aims to encourage families, residents and tourists to discover – or rediscover – the Lisbon landmark during the summer holidays.

The ticket includes access to the permanent exhibition, centred around the Oceanário's impressive central tank, home to species from oceans around the world, as well as two temporary exhibitions currently on display.

Visitors can still experience Submerged Forests by Takashi Amano, which closes on 30 June, alongside the newly opened Sea Monsters exhibition, developed in partnership with DinoParque Lourinhã.

The exhibition takes visitors on a journey through the evolution of marine life, showcasing life-sized models of some of the ocean's most extraordinary prehistoric creatures. Designed to be both educational and immersive, it offers a glimpse into the ancient predators that once dominated the seas.

The summer flash sale is available through the Oceanário de Lisboa website until 30 June.