Asia
Afrika
Eropah
lain
Amerika Utara
Amerika Selatan
Australia
pulau hawaii, mid-Atlantik ridge
China, Kazakhstan, South Korea, Thailand, Turkey, Vietnam
Egypt, Ethiopia, Ghana, South Africa
Finland, France, Germany, Great Britain, Hungary, Iceland, Ireland, Italy, Netherlands, Norway, Romania, Sweden, Switzerland
Canada, Cuba, Jamaica, USA
Bolivia, Brazil, Kolumbia, Ekuador, Paraguai
New South Wales, New Zealand, Western Australia