A boat is rowed on a typically foggy morning in the Ganga (Ganges) River at Varanasi, Uttar Pradesh, India, Asia

Tourists in a boat on Lake Sandoval, Peruvian Rainforest, South America in the early morning.

Bujagali Falls is a waterfall near Jinja in Uganda where the Nile River comes out of Lake Victoria, sometimes considered the source of the Nile. This is a very popular tourist attraction for people wanting to raft on the white water rapids. Bujagali Falls, Jinja, Uganda, East Africa

Lindblad Expeditions Guests doing fun and exciting things in the Galapagos Island Archipeligo, Ecuador. No model releases.

Guests from the Lindblad Expedition ship National Geographic Explorer kayaking in and around the Antarctic Peninsula in the summer months.

Lindblad Expeditions Guests doing fun and exciting things in the Galapagos Island Archipeligo, Ecuador. No model releases.

Lindblad Expeditions Guests doing fun and exciting things in the Galapagos Island Archipeligo, Ecuador. No model releases.

Lindblad Expeditions Guests doing fun and exciting things in the Galapagos Island Archipeligo, Ecuador. No model releases.

Lindblad Expeditions Guests doing fun and exciting things in the Galapagos Island Archipeligo, Ecuador. No model releases.

Staff from the Lindblad Expeditions ship National Geographic Sea Bird kayaking in Southeast Alaska, USA.

Lindblad Expeditions Guests doing fun and exciting things in the Galapagos Island Archipeligo, Ecuador. No model releases.

Four boats tied to the dock on Lake Mohonk, wait to be rowed.