Environmental information poster about ecosystem of limestone cenotes, Yucatan, Mexico, North America

Beach entrance to a resort on the east coast of this coral fringed holiday and diving island, Bunaken Island, North Sulawesi, Indonesia, Southeast Asia, Asia

Jetty and Welcome sign for tourist boats on the central bay of this popular holiday and diving island, Bunaken Island, North Sulawesi, Indonesia, Southeast Asia, Asia

Yohanes Church on this Christian coral fringed holiday island and scuba diving destination, Bunaken Island, Sulawesi, Indonesia, Southeast Asia, Asia

Papua Diving Resort, Raja-Ampat, Kri, Dampier Strait, Western New Guinea, Indonesia, Asia

Information board of the diving school, Hotel Anthony's Key Resort, Roatan, Honduras, Central America

Morning Light On Cat Lake, Just North Of Squamish, British Columbia, Canada

Scuba diver shows o.K. signal, Bahamas, Caribbean Sea, Grand Bahama Island

Scuba diver shows o.K. signal, Netherlands Antilles, Bonaire, Caribbean Sea

No swimming No diving sign at the edge of wooden jetty

Warning sign at edge of swimming pool

Close up of warning sign "no diving"

No diving sign on edge of swimming pool