One of the smallest islands you can visit in Galapagos, South Plaza is half a mile long and just 100m across. It boasts the highest concentration of land iguanas in the islands, who depend on the ornamental cacti for food and shade. Below the cacti is a carpet of sesuvium, a ground succulent that wears autumn colors in the dry season, generating the most picturesque landscape. A vibrant sealion colony brings plenty of action to a visit here, with plenty of playful pups and a batchelor colony. Nesting swallow-tailed gulls along the steep cliffs and the occasional booby often take second place to the soaring shearwaters and screaming red-billed tropic birds.