Our best friends of the sea, the dolphins have always been a great fascination to humans. They are friendly, happy and social animals and have been positively noted for their playful nature, intelligence and occasional help to humans, whether it is fishing or rescuing their lives! Here's 15 facts about dolphins that you might not know.
1. There have been 43 recognized species of dolphins! 38 are marine dolphins and the other five are river dolphins.
2. It has been researched that dolphins are "re-entrants" and actually lived on land before adapting to the water. When studying their fins, scientists have found that they are actually formed like legs and toes. So maybe our closest sea friends were wolf-like land animals once.
3. Images of dolphins have been found carved into the desert city of Petra, Jordan. Petra was established as early as 312 BC, so given that estimation dolphins have been around for quite a long time.