This work on colourful corals became the worldwide standard.
From the fine beaches it's the work of a moment to don mask, snorkel and flippers and drift over colourful coral.
Passengers may snorkel, view colourful coral and a myriad of fish from the ship's glass-bottomed boats, or simply relax in the sunshine.
There's plenty of colourful coral, and turtles, stingray and pufferfish often pass by.
Home to colourful corals, angelfish, clown fish and territorial triggerfish.
Micronesia's Chuuk Lagoon is rich in colourful coral and tropical fish, but for divers these are almost peripheral to the main attraction.
The island is known for its colourful coral, probably the biggest variety in the Caribbean, which clusters on sloping drop-offs that vary between 45 and 60 degrees.
Ko Whai is a reef-fringed diving spot that features a good variety of colourful hard and soft corals at depths of 6m to 15m.
Some visitors come to Trang to learn about the rich diversity of colourful coral and others, the huge variety of bird species on Bird Island.
Our shores used to be filled with colourful corals and an abundance of all kinds of fish.