This huge elephant swimming pool is allowing Japanese zookeepers better understand how pachyderms move in water.
An Asian elephant swims a 65-meters long pool at Fuji Safari Park in Susono at the foot of Mt. Fuji, southwest of Tokyo, Monday, July 13, 2015. The park was inspired by the images of elephants swimming in the ocean and wanted to build a facility exactly demonstrating what was little known in Japan that elephants can actually swim. The attraction opened on July 11
The 65 metre pool has been built to replicate the scale of a river elephants would encounter in the wild.
A mammoth-sized swimming pool has been built at the foot of Mount Fuji - to give zoo elephants a chance for a bit more exercise.
Huge glass panes encase thousands of gallons of water, providing a space for Fuji Safari Park's larger residents to as many as three or four laps a day.
Zookeeper Daiki Takeuchi said the transparent sides, 65 metres in length, offered a "surprising" glimpse into how elephants move around the water, using their powerful legs for propulsion as they poke their trunks above the surface.
The Honshu Island zoo, in the shadow of Japan's tallest mountain, is also home to litters of lion cubs.
Controversially, the park is one of only a few to allow visitors to cuddle, pet and have photographs taken with the three-week-old animals.