Cruise through the Galapagos Islands aboard the luxurious 16-guest diving liveaboard, Galapagos Sky. With diving options daily, you'll search for whale sharks, dolphins, hammerhead sharks, sea turtles, eagle rays, barracuda, mola mola, and more among the stunning underwater topography.
Cofounder & Expedition Leader
A marine biologist and professional naturalist, Jack has spent much of the past two decades traveling on, and lecturing about, the world's oceans. Cofounder of Zegrahm Expeditions and research associate in the Section of Fishes at the Los Angeles County Museum of Natural History, Jack is a leading authority on the fishes and marine environments of the eastern tropical Pacific. For seven years he lived in the Galápagos, where he carried out extensive marine biological studies. In 1997, Stanford University Press published his comprehensive volume The Fishes of the Galápagos Islands, and he received his Ph.D. from Pacific Western University. A true adventurer and Fellow of The Explorers Club, Jack has led numerous expeditions to the remote corners of the world, participating in polar expeditions as a marine naturalist, photographer, and expedition leader, as well as working with noted scientists and explorers such as Jean-Michel Cousteau. Jack is an avid scuba diver, certified divemaster, and dedicated conservationist. In 2002 he was one of 57 scientists invited by the World Conservation Union (IUCN) to participate in a conference in Hanoi to discuss a strategy for the preservation of marine biodiversity. When not traveling, he manages his own photography business in the Florida Keys.
Jack's Blog Posts
Jack's Upcoming Expeditions
Galapagos Diving AdventureOctober 7 — October 16, 2017
Faces of Polynesia: Fiji to TahitiOctober 22 — November 7, 2017
Your journey through a South Pacific paradise includes fabled Fiji and Tahiti—of course—while also immersing you in the incredible natural beauty and friendly peoples of lesser-traveled Tonga, Wallis & Futuna, and Cook Islands.
Tahiti to Easter Island: Marquesas, Tuamotus & PitcairnsNovember 5 — November 24, 2017
Beyond the typical Polynesian paradise, one may delve deeper, to find aquamarine lagoons affording the world’s most dazzling snorkeling and diving, an intriguing Easter Island tour and the sky-piercing volcanoes of the Marquesas.
Best of Micronesia: Rabaul to PalauFebruary 23 — March 12, 2018
Snorkel or dive nearly every day as you discover the western corner of Micronesia—this region boasts more than 1,300 species of fish. You'll also meet friendly locals, who will greet you with traditional dances; search for island endemics and a multitude of seabirds; and tour the island of Pohnpei.
Canal to Cuba with Panama, Costa Rica & ColombiaApril 5 — April 20, 2018
Continents commingle in Central America, with its significant human history and rich biodiversity—we’ll transit the Panama Canal by day, hike to traditional villages in San Blas, snorkel over colorful reefs, and end in recently-opened Cuba.
Circumnavigation of CubaApril 17 — April 30, 2018
Immerse yourself in Cuban culture as you meet friendly locals, savor traditional cuisine, and enjoy musical performances, including a visit to the Buena Vista Social Club. Plus, you’ll travel with ease aboard the intimate, 104-guest sailing ship, Hebridean Sky.
Wild GalapagosJuly 27 — August 5, 2018
Witness numerous endemic species; photograph a wide variety of wildlife that has grown astonishingly fearless in the absence of humans and large predators; discover fascinating geology—lunar-like lava fields, eroded volcanic cones, and active shield volcanoes; and snorkel and swim among playful sea lions as well as sea turtles, rays, and, with luck, Galápagos penguins.
Seychelles & Madagascar with Aldabra AtollOctober 20 — November 6, 2018
Expedition Leader, Michael Moore will be leading this journey through the Indian Ocean. Enjoy snorkeling and diving in the Seychelles; spend two full days exploring the Aldabra Atoll; and discover the unique flora and fauna of Madagascar.
Hidden Gems of the CaribbeanNovember 25 — December 6, 2018
On our journey through the lesser-known Eastern Caribbean, we’ll venture to ports inaccessible to larger ships, affording you the chance for dazzling snorkeling, hiking, bird-watching—glimpse the St. Vincent parrot—and explorations of historic forts and peaceful colonial plazas.