Asia
Afrika
Eropah
lain
Amerika Utara
Amerika Selatan
Australia
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
Angola, Egypt, Ethiopia, Madagascar, Namibia, Nigeria, South Africa
Bulgaria, England, Germany, Norway, Romania, Switzerland
Argentina, Bolivia, Brazil, Chili, Kolumbia, Ekuador, peru
New South Wales, New Zealand, Queensland, South Australia, Western Australia
pulau hawaii, mid-Atlantik ridge