A Galapagos Islands cruise operator has environmental concerns front of mind.
It's a weird feeling standing in the dark belly of a lava tunnel where the Earth's fiery core once roared.
Marine iguanas forage for algae on a bed of volcanic rocks, sea lions corkscrew playfully through the water - snorkelling in the Galapagos Islands is just like being in a nature documentary.
Wildlife may be the main attraction, but the Galapagos Islands offer so much more, writes Tatyana Leonov.
The beauty about cruising around the Galapagos Islands is that the panoramas are constantly changing.
When first discovered, these islands were considered hell on earth. Centuries later, they're now recognised as a unique paradise.
With limits on the number of ships allowed to cruise the islands, basing yourself on land is a good alternative.
I visited the island featured in the terrifying viral clip and had my own encounter with the resident snakes.