Public aquarium

The building site was to be Unter den Linden (along a major avenue), in the centre of town, not at the Berlin Zoo.

[3] With its emphasis on education, the public aquarium was designed like a grotto, part of it made of natural rock.

Because of Brehm's special interest in birds, a huge aviary, with cages for mammals placed around it, was located on the second floor.

[7] Modern aquarium tanks can hold millions of litres of water and can house large species, including dolphins, sharks or beluga whales.

The National Aquarium in Baltimore, Maryland houses several exhibits including the Upland Tropical Rain Forest and a multiple-story Atlantic Coral Reef.

The Monterey Bay Aquarium has a shallow tank filled with common types of rays[13] which visitors are encouraged to touch.

The South Carolina Aquarium lets visitors feed the rays in their Saltmarsh Aviary exhibit.

An inland pioneer was Chicago's Shedd Aquarium[15] that received seawater shipped by rail in special tank cars.

The 110-metre (360 ft) tunnel was built from one-tonne (2,200-lb) slabs of German sheet plastic that were shaped locally in an oven.

A moving walkway now transports visitors through, and groups of school children occasionally hold sleepovers there beneath the swimming sharks and rays.

He survived in captivity for just under three months, and the aquarium put him on display to the public for a day, but gave greater emphasis to groundbreaking scientific research.

Beginning in September 2004, the Outer Bay exhibit (now the Open Sea galleries) was the home to the first in a series of great white sharks.