This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Mahapadma (Hindu mythology)
Mahapadma also appears as the name of a treasure-guarding naga (serpent, dragon) in Harivamsa and Vishnu Purana. Brewer's Dictionary of Phrase and Fable lists Maha-pudma and Chukwa are names from a "popular rendition of a Hindu myth in which the tortoise Chukwa supports the elephant Maha-pudma, which in turn supports the world".
The elephant's movements are considered the epitome of gracefulness. However, the elephant also represents the earth and its tremors. Once, in India, the ground used top actually tremble as the herds passed. A regional myth holds that the world rests on the head of a great elephant, Mahapadma, and when it moves its head to get more comfortable, an earthquake is produced.