With a little help from their mother, two six-month-old polar bear cubs played with wooden crates and splashed around as they were let loose on their new swimming pool. Twins Nobby and Nela were given free reign at their new enclosure at the Hellabrunn zoo in Munich, southern Germany. The mischievous pair chased each other, and their mother Giovanna, around the pool, and were spotted play-fighting. But, at times, they slowed down to sniff out their new surroundings. The cubs were born in the zoo of Munich in December 2013 and have been inseparable ever since. They were named to keep in line with a rule that all animals born at the zoo must be given names beginning with the letter 'n'. Scroll down for video . Lift: Giovanna slides a crate up the side of a rock towards her six-month old twins at a zoo in Munich, Germany . Walking together: The adult bear holds what looks like a wrecking ball as he walks by the pool enclosure . Jump: One of the daring twins leaps from the rock into their new pool inside the enclosure . Bond: The pair are still inseparable six months on from when they were born at the end of last year . Drenched: The mischievous pair make the most of their new water feature at the Munich zoo . Making a splash: One of the twins jumps into the water while the other turns its head away . Lookout: Nobby and Nela scan the surroundings of their new enclosure while perched on a rock . Family: As the pair stay sat on the bank, Giovanna pops her head up from beneath the water to entice them in .
Twins Nobby and Nela ran around their new area at Hellabrunn Zoo, Munich .
Their mother Giovanna watched as they splashed around in the pool .
The cubs were born in 2013 and have been inseparable ever since .
With a little help from their mother, two six-month-old polar bear cubs played with wooden crates and splashed around as they were let loose on their new swimming pool. Twins Nobby and Nela were given free reign at their new enclosure at the Hellabrunn zoo in Munich, southern Germany. The mischievous pair chased each other, and their mother Giovanna, around the pool, and were spotted play-fighting. But, at times, they slowed down to sniff out their new surroundings. The cubs were born in the zoo of Munich in December 2013 and have been inseparable ever since. They were named to keep in line with a rule that all animals born at the zoo must be given names beginning with the letter 'n'. Scroll down for video . Lift: Giovanna slides a crate up the side of a rock towards her six-month old twins at a zoo in Munich, Germany . Walking together: The adult bear holds what looks like a wrecking ball as he walks by the pool enclosure . Jump: One of the daring twins leaps from the rock into their new pool inside the enclosure . Bond: The pair are still inseparable six months on from when they were born at the end of last year . Drenched: The mischievous pair make the most of their new water feature at the Munich zoo . Making a splash: One of the twins jumps into the water while the other turns its head away . Lookout: Nobby and Nela scan the surroundings of their new enclosure while perched on a rock . Family: As the pair stay sat on the bank, Giovanna pops her head up from beneath the water to entice them in .
crates and splashed around as they were let loose on their new swimming pool. Twins Nobby and Nela mother Giovanna, around the pool, and were cubs were born in the zoo of Munich in December 2013 and have been inseparable ever since. They