The Voyage of the Arctic Tern instructs his three friends remain with the Arctic Tern. Then he dons his scuba gear, plunges into the water, and swims toward the ship. A large octopus with fiery eyes guards the treasure chest on the deck. Bruno wrestles with the octopus, kills it, and touches the silver coins in the chest. Immediately, Morgan's pirate ship crumbles to dust. Then Bruno, the treasure chest, and the Arctic Tern vanish. Chris, Steve, and Adrian no longer remember how they each got safely home after this, nor can they remember anything about Bruno, the Arctic Tern, or the treasure. However, Adrian remains
Tern declining populations of less than 10,000 birds. The South Asian black-bellied tern is threatened by habitat loss, egg collecting for food, pollution and predation. In New Zealand, the black-fronted tern is facing a rapid fall in numbers due to predation by introduced mammals and Australian magpies. Disturbance by cattle and sheep and by human activities is also a factor. The Peruvian tern was initially damaged by the collapse of anchoveta stocks in 1972, but breeding colonies have subsequently been lost due to building, disturbance and pollution in their coastal wetlands. The Australasian fairy tern is described as "vulnerable". Disturbance by