Darwin and Wolf Island take that title; both are a mecca for divers seeking hammerhead sharks. Marchena comes in 3rd place being far from inhabited islands.
Marchena is known for excelent diving sites, at Punta Espejo you can dive with hammerhead and Galapagos sharks.
The islands of La Pinta and Marchena have no land visitor sites. They are the least visited islands in the Galapagos archipelago.
Their isolation led to unparalleled wildlife evolution, inspiring Darwin’s theory of natural selection.