So individuals with mutations that reduced the length of their tails became more successful at life on land, surviving long enough to pass their short tails on to the next generation.
Some scientists believe Tonga’s problem is partly down to genetics that pacific islanders in the past had to survive long periods without food so their bodies are programmed to cling on to fats.
Living organisms for millions of years depended on their instincts to survive, over time for some animals this evolved from an instinct to a feeling of fear.
Okene's horrific ordeal is believed to be the longest amount of time that any human being has ever survived for underwater without the assistance of any diving equipment.
At 110 dB, this volume level is survivable for short periods of time, but likely would end up with the entire population of the planet going deaf if they weren't wearing earplugs as it plays in our sky non-stop.