If you take an overnight bus or train from BLR, expect arrival in Mangalore/Mulki early morning ā use local taxi or pre-booked pickup to reach your Mulki homestay.
Stop at a coastal āUdupi hotelā near Mulki for dosas/idli/saagu and fresh filter coffee; filling, cheap, and local (a great way to start a beach trip).
Mulki has a chilled estuary and surf culture ā rent a board or join a short guided kayak/surf intro (operators typically run sessions 6:30amā5:30pm). Great for a youthful, active morning by the river-meets-sea vibe.
Wander the riverside, small bridges and local markets ā good for photos, low-key exploring and chatting with fisherfolk. This area is quieter than major beaches but lively enough with local energy.
Casual dinner: grilled fish or vegetable Kori Rotti/roti options at a local shack or your host's kitchen; great chance to try coastal spices and unwind.
Scenic ~1ā1.5h drive north from Mulki; the road runs with the Arabian Sea on one side and the Souparnika river on the other ā one of Indiaās most photogenic coastal stretches.
Try a popular local joint or roadside eatery for Kundapura fish curry and neer dosa, or choose a vegetarian coastal platter; portions filling and affordable.
Explore small fishing hamlets, mangrove patches and quiet backwater lanesāideal for low-key exploration and short boat rides (local boats sometimes available 9amā5pm).
Find a quieter cove off the main stretch ā Maravanthe area still has pockets of calm where you can watch the sun set with far fewer people than major beaches.
Quick breakfast and checkout to reach Malpe jetty early ā St. Mary's Island boat schedules usually run 8:30amā3:00pm; best morning visit is 8:30ā11:30 for calmer waters.
Catch the public boat from Malpe to St. Mary's Island (boat window usually 8:30ā11:00 and 12:00ā3:00); explore the unique hexagonal basalt formations and small beaches ā popular but a must-see for geology and island vibes.
Short stroll through Udupi markets for coconut-based snacks, local sweets and beachwear stores; avoid long temple visits (you asked for exploration, not temple-heavy itinerary).
Kaup has a photogenic lighthouse and a long stretch of sand ā perfect for a mellow sunset hangout. The lighthouse area is open in daylight (typically accessible 8amā6pm; confirm locally).
If using bus or train back, pre-book late-afternoon or evening overnight options from Udupi/Mangalore to Bangalore to optimize time; buses/trains run frequently in high season but book early for Dec 20ā23.