Tourists watching geyser erupting, Strokkur (the Churn) erupts every 5-10 minutes to heights of up to 20 meters (70ft), Geysir, Golden Circle, Iceland, Polar Regions

Strokkur (the Churn) erupts every 5-10 minutes to heights of up to 20 meters (70ft), Geysir, Golden Circle, Iceland, Polar Regions

Strokkur (the Churn) which spouts up to 35 meters erupting every 10 minutes, Geysir, Golden Circle, Iceland, Polar Regions

Strokkur (the Churn) which spouts up to 35 meters erupting every 10 minutes, Geysir, Golden Circle, Iceland, Polar Regions

Local people inside a house in Gyantse village or Gyangze town, Tibet, China. Located in the northeast of Gyantse at 3900 meters above sea level. Pelkor Chode Monastery, or rather Palcho Monastery in Tibetan language means auspicious monastery. It was first built in early 15th century and took 10 years to complete. Because it was built when different religious sectors conflicted neck and neck in Tibet, Sakyapa, Kadampa and Gelukpa of Tibetan Buddhism coexist in it. Each religious sector has five to six Dratsang schools in the monastery.

Rochester Falls in Mauritius, Africa

Diving tower with a 10-meter diving board in an outdoor pool, Gladbeck, North Rhine-Westphalia, Germany, Europe

Diving tower with a 10-meter diving board in an outdoor pool, Gladbeck, North Rhine-Westphalia, Germany, Europe

A giant tunnel boring machine of the specialist firm Herrenknecht, length 90 meters, bore diameter more than 10 meters, in front of the construction site of the second tube of the Kaiser Wilhelm Tunnel at the Ediger-Eller district, Rhineland-Palatinate, G

A giant tunnel boring machine of the specialist firm Herrenknecht, length 90 meters, bore diameter more than 10 meters, in front of the construction site of the second tube of the Kaiser Wilhelm Tunnel at the Ediger-Eller district, Rhineland-Palatinate, G

A giant tunnel boring machine of the specialist firm Herrenknecht, length 90 meters, bore diameter more than 10 meters, in front of the construction site of the second tube of the Kaiser Wilhelm Tunnel at the Ediger-Eller district, Rhineland-Palatinate, G

A giant tunnel boring machine of the specialist firm Herrenknecht, length 90 meters, bore diameter more than 10 meters, in front of the construction site of the second tube of the Kaiser Wilhelm Tunnel at the Ediger-Eller district, Rhineland-Palatinate, G

Diving tower with a 10-meter diving board in an outdoor pool

Donegall Quay The Big Fish Sculpture by John Kindness, The scales of the fish are pieces of printed blue tiles with details of Belfasts history, Ireland

Snorkeler photographing a pod of Sleeping sperm whale (Physeter macrocephalus) Researchers first saw this unusual sleep behavior in sperm whales in 2008. The scientists in that study found that sperm whales dozed in this upright drifting posture for about 10 to 15 minutes at a time, Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

Pod of Sleeping sperm whale (Physeter macrocephalus) Researchers first saw this unusual sleep behavior in sperm whales in 2008. The scientists in that study found that sperm whales dozed in this upright drifting posture for about 10 to 15 minutes at a time, Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

Free diver is swimming over a pod of Sleeping sperm whale (Physeter macrocephalus) Researchers first saw this unusual sleep behavior in sperm whales in 2008. The scientists in that study found that sperm whales dozed in this upright drifting posture for about 10 to 15 minutes at a time, Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

Pod of sperm whale relaxing after a short sleep (Physeter macrocephalus) Researchers first saw this unusual sleep behavior in sperm whales in 2008. The scientists in that study found that sperm whales dozed in this upright drifting posture for about 10 to 15 minutes at a time, Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

Pod of Sleeping sperm whale (Physeter macrocephalus) Researchers first saw this unusual sleep behavior in sperm whales in 2008. The scientists in that study found that sperm whales dozed in this upright drifting posture for about 10 to 15 minutes at a time, Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.