Glass-bottomed boats and underwater observatories are also popular, as are helicopter flights.

A man-made coral reef has been created on the sea bottom and you can watch all the marine activity from an underwater observatory.

Coral reefs grow in the sea near Eilat and people can see them by scuba diving or from an underwater observatory.

There is a now closed underwater observatory on the island due to health and safety deeming it to have inadequate ventilation.

Design, installation, and the first two years of operation of an underwater observatory on the western Panamanian shelf.

A guest house was originally built in the 1930s and an underwater observatory was installed in 1954.

Points of interest in and around Eilat include an international bird-watching center, nature reserve and underwater observatory.

An underwater observatory in Milford Sound allows tourists to view them without diving.

Snorkel amid hundreds of colourful flsh, or stay dry and gaze out from the underwater observatory.

A virtual underwater observatory shows the Hudson's Bay region during the Ordovician period.