Lisbon, Portugal, is a city known for its rich history, stunning architecture, and vibrant culture.
However, there’s a hidden gem amidst the historic streets and vibrant neighborhoods.
The Lisbon Oceanarium draws visitors from around the world.
This article will delve into the fascinating facts about Lisbon Oceanarium, making it a truly exceptional attraction.
Europe’s Largest Indoor Aquarium

Towering above the rest, the Lisbon Oceanarium stands as Europe’s largest indoor aquarium.
It doesn’t stop there; it also boasts the title of the world’s largest saltwater aquarium.
This aquatic wonderland is a sanctuary for approximately 25,000 marine animals.
It is home to a mesmerizing array of fish, seabirds, and mammals that hail from diverse corners of our planet.
You can unlock unique marine information with an online ticket to the Lisbon Oceanarium, where you’ll find a world of aquatic delights and informative exhibitions.
Massive Central Tank
The colossal central tank, at the heart of the Lisbon Oceanarium, spans two floors and reaches a depth of seven meters (approximately 23 feet).
The tank holds a staggering 5 million liters of seawater—equivalent to about 14 Olympic-sized swimming pools.
Within this aquatic realm is a rich tapestry of marine life, including sharks, rays, barracudas, groupers, and moray eels.
Diverse Ocean Habitats

The oceanarium features four distinct habitats, each representing a different part of the world’s oceans.
These habitats include the North Atlantic rocky coast, the Antarctic coastal line, the Temperate Pacific kelp forests, and the tropical Indian coral reefs.
- North Atlantic Rocky Coast: A rugged world of the North Atlantic’s rocky coast with a dynamic interplay between marine life and their rocky surroundings.
- Antarctic Coastal Line: The chilly waters of the Antarctic house adorable Rockhopper Penguins and Magellanic Penguins, hailing from the Falkland Islands.
Inca Terns are among the avian inhabitants.
- Temperate Pacific Kelp Forests: A serene underwater forest featuring the kelp forests of the Temperate Pacific.
An intricate web of life as fish and other creatures navigate the swaying kelp fronds.
- Tropical Indian Coral Reefs: The vibrant coral reefs of the Tropical Indian Ocean are reminiscent of the Seychelles’ coralline beaches.
This lush and biodiverse ecosystem features a rainforest walkway with the sounds of exotic birds and monkeys.
Sunfish

Another amazing Lisbon Oceanarium fact is that it boasts the distinction of being one of the few aquariums in the world that houses sunfish.
Caring for these fish presents significant challenges.
With its massive size exceeding three meters in length and weighing over two tons, the Ocean Sunfish is a rare sight in an aquarium.
Whether you’re seeking refuge from Lisbon’s scorching summer heat or shelter from unexpected rain, the Oceanarium offers a tranquil haven.
Here, you can escape into the mesmerizing world beneath the waves.
And don’t forget to visit the gift shop.
It displays an array of delightful mementos, from soft toy penguins to captivating books and souvenirs.
Featured Image: Jean-Luc Ichard / Getty Images