Overnight we have sailed towards the 4th largest of the Galapagos Islands, Santiago (which is also known as James and San Salvador). We're now anchored off Sombrero Chino (Chinese Hat) Island and after breakfast we enjoy a panga ride along the coast. We're on the look out for the Galapagos Penguin, and anything else we can find of course! We're in luck. We spot a massive Manta Ray and follow it discreetly. It is at least 12 feet across. After the panga ride, some guests join a snorkelling trip while others take a walk over rocky terrain from a small sandy beach to an area of tide pools populated by numerous, very colourful Sally Lightfoot Crabs and a few marine iguanas! On this walk we see a couple of Galapagos Penguins, so our search is rewarded! Back on board the MS Islander we sail past the Bainbridge Islets and from the top deck we look over a rocky edge into a collapsed caldera. The caldera is full of brackish water and we see some bright pink flamingos in the distance. During lunch we sail to Sullivan Bay and this afternoon we enjoy a hike on Santiago Island across the amazing lava flow just 100 years old.