The Structure and Distribution of Coral Reefs noted the location of the different types of coral around the reef and in the lagoon. In his diary, he described, "examining the very interesting yet simple structure & origin of these islands. The water being unusually smooth, I waded in as far as the living mounds of coral on which the swell of the open sea breaks. In some of the gullies & hollows, there were beautiful green & other colored fishes, & the forms & tints of many of the Zoophites were admirable. It is excusable to grow enthusiastic over the infinite numbers of organic beings with which
Open-air Water Museum hall, a recreation area and an open-air cinema. There are many water channels on the site. Open-air Water Museum The Open-air Water Museum () is located in the city of Edessa, Central Macedonia, Greece. In the early 20th century there were many water-powered workshops in the city. In 1991 the Municipality of Edessa decided to improve and develop the Mills area, the Kannavourgio and the ‘Estia’ works, by establishing an open air, water-power museum, and creating recreation areas. The Open-Air Water Museum, which opened early in 2000, aims to acquaint visitors with the history of water-power from the workshops of