's first expedition to the Galápagos lasted twenty days, broken into two ten-day periods, between which the "Noma" was forced to return to Panama for fresh water and coal. During this expedition he documented the unique ways that animals that inhabit the Galápagos have evolved in response to the absence of predators. The Galápagos animals generally showed no fear of humans, causing the team to have a high degree of success at capturing live specimens for the zoo. Beebe also discovered a previously unknown bay on Genovesa Island (also known as Tower Island) in the Galápagos, which he named Darwin Bay, and documented the diversity of animal life that inhabited it. During the return to New York from this expedition, Beebe continued to dredge animals from the sea, using a pair of new devices he had devised to assist himself with this: a "pulpit", an iron cage affixed to the bow of the ship that enabled its occupant to examine the surface of the sea more closely; and a "boom walk", a boom jutting from the side of the ship from which he suspended himself. The book in which Beebe summarized this expedition, titled "Galápagos: World's End", was an instant best-seller and remained on the "New York Times" top ten list for several months.