A dolphin trainer in the Ukraine has taught one of his wards to do something quite unusual.
Gosha - a 15-year-old Black Sea bottlenose dolphin - can now leap out of the water and crawl up to 10 metres on his belly.
Bogdan Dolgy first came across the idea when Gosha tried to get out of the water and crawl on it own during the summer.
"After I noticed that I fixed it in his mind, gave him some fish and he liked it, and now it happens all the time, after every stunt he is swimming and splashing his tail on the surface of the water."
"If compared to a human it's perhaps like making a human climb a tree like a monkey or swim like a fish."
The trainer thinks Gosha was trying to imitate humans when it first began to crawl.