St. Mary's Islands, also known as Coconut Island and Thonsepar, are a set of four small islands in the Arabian Sea off the coast of Malpe in Udupi, Karnataka, India. They are known for their distinctive geological formation of columnar basaltic lava.
 Open Water Swimming
Prakash Kharvi swam between St. Mary's Islands to Malpe Beach in February 2011.
Gopal Kharvi swam between St. Mary's Islands to Malpe Beach in December 2013 and set the world record for the furthest distance swum wearing handcuffs and leg irons at 3.071 km in 2 hours 43 minutes.
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