Start early from Bangalore to make the most of the day. The drive to Gokarna takes roughly 8 hours by car or bus, allowing scenic views of the Western Ghats en route.
If interested, take a boat trip for snorkeling and diving near Netrani Island, weather and season permitting; book in advance. Tours start at 8:30AM and last about 3 hours. Otherwise, a relaxed beach walk is a great alternative.