On 10 March 1526 Pizarro left Panama with two ships with 160 men and several horses, reaching as far as the Colombian San Juan River. Soon after arriving the party separated, with Pizarro staying to explore the new and often perilous territory off the swampy Colombian coasts, while the expedition's co-commander, Almagro, returned to Panama for reinforcements. Pizarro's Piloto Mayor (main pilot), Bartolomé Ruiz, continued sailing south and, after crossing the equator, found and captured a balsa (raft) under sail, with natives from Tumbes. To everyone's surprise, these carried textiles, ceramic objects and some pieces of gold, silver and emeralds, making Ruiz's findings the central focus of this second expedition. Some natives were taken aboard Ruiz's ship to serve as interpreters.