Describe the amazing circumstances which helped Gulliver to escape from Brobdingnag?

Gulliver had gone to visit the south coast with King and Queen. Glumdalclitch was ill and a trusted page was positioned at her duty for the day.  On Gulliver's request he was left at the seaside to enjoy fresh air. However he was awake due to violent movements. On waking up he discovered that he has been picked up a huge bird and is being carried over an ocean. He was eventually dropped into water, where he floated and lamented his plight till  he got the feeling that his box was being dragged. He was bought upon the deck of the ship and saved by the sailors.