Darwin is the northern most island and about 4 hours by boat from Wolf. Darwin is 165m high with vertical walls and a huge rock arch in the east. This dive site is not very protected, so dive conditions can be rough with waves, surge and changing currents. The currents are normally from the southeast and split right in front of the Rock Arch. Not for beginners! The cold Humboldt current has little effect so far north, so the water is warmer by a few degrees (Dec - April: 24°C - 27°C and May - Nov: 22°C - 25°C ) so there are more corals here, than around other islands.

Rock Arch: On the east of the island there is a underwater plateau where a prominent rock arch rises. You dive on a steep wall which is dropping off. This is a place to see schooling hammerhead sharks which are being cleaned by King Angelfish or swimming off the reef in the blue. On the ridge you'll find large schools of fish like mackerels or blue striped snappers. Turtles, Mexican hogfish, Moorish idols, coronet fish, trumpetfish, parrotfish and green spotted eels and morays are encountered here. In the rubble on the bottom live flounders and octopuses. This is the main dive site around Darwin.

Here and at the other dive sites called the Tower Rock and the Underwater Rock, you might also encounter Galapagos sharks, silky sharks, dolphins, yellow fin tuna, big eye jacks, mobula rays, eagle rays, golden cowrays and mantas. From June to November, there is a very good chance to see whale sharks. I heard, there are even sometimes tiger sharks, marlins and whales.