The Aleutian Islands are a pivotal but uncertain waypoint in the novel’s attempts to predict Angel’s movement. They mark the difference between an initial forecast based on whale migration and Jonas Taylor’s later theory that the shark is navigating by seismic signals along the Ring of Fire.

A Waypoint in the Whale-Migration Forecast

During the pursuit, Maren explains that Megalodon is following a principal whale-migration route along the Canadian and Alaskan coastlines. He expects the shark to continue west to the Aleutian Islands, then turn north behind whale pods entering the Bering Sea. That forecast helps prompt a change of course: the William Beebe takes an alternate route across the Gulf of Alaska to get ahead of the shark and intercept it at Cape Chiniak, Kodiak Island.

The islands are thus part of a working prediction, not a confirmed encounter. The proposed route depends on the assumption that the shark will keep following the migrating whales, and the interception plan is designed to exploit that expectation.

A Link in the Seismic-Route Hypothesis

Later, Jonas offers a different explanation for Angel’s course. He connects her mother’s escape from the Trench four years earlier—eastward along the Hawaiian island chain and then north along the Central American coastline toward Monterey Canyon—with Angel’s own route after escaping the lagoon. Jonas argues that these places belong to the Ring of Fire and proposes that the sharks can orient themselves over long distances using Earth’s magnetic field and seismic vibrations in fault lines.

On this account, Angel may have bypassed the Bering Sea rather than following the expected whale route. Jonas suggests that she continued southwest along seismic signals from the Aleutian Trench, then could have crossed the Northern Pacific toward the Kamchatka and Kuril Trenches, the Japanese Trench, and ultimately the Mariana Trench. The Aleutian Islands and the Aleutian Trench occupy related points in this reasoning, but the proposed route specifically follows the trench’s seismic corridor; the text does not establish that Angel passes through the islands themselves.

Narrative Significance

The location’s significance comes from the uncertainty attached to it. In the first account, the Aleutian Islands are a turning point in a conventional prediction grounded in cetacean migration. In Jonas’s later theory, the nearby trench becomes part of a vast underwater navigational network that could draw Angel back toward the species’ deep-sea home. The competing models keep the pursuit’s direction unsettled and show how a geographic waypoint can change meaning as the characters revise what they believe is guiding the shark.