Factual error: There is no way a 2001 phone's tiny speaker could be heard a hundred meters away in the belly of a dinosaur or later buried in a mound of dino dung.

Jurassic Park III (2001)
Ending / spoiler
Directed by: Joe Johnston
Starring: Sam Neill, William H. Macy, Laura Dern, Alessandro Nivola, Téa Leoni, Trevor Morgan, Bruce A. Young
Eric is alive and saves Grant from the velocoraptors. Cooper, Nash and Udesky are killed, and Billy also appears to die after rescuing Eric from a nest of pteranadons. After escaping the spinosaurus and the pteranadons, Grant, Amanda, Paul, and Eric are confronted by the raptors. They return the eggs Billy stole from the raptors' nests, and the raptors leave without harming them. They are rescued by both the navy and marines, who were contacted by Dr. Ellie Sattler, Grant’s colleague who he called on the satellite phone just before it went dead. An injured Billy has also been rescued and is aboard the waiting helicopter. On the chopper, Alan and Eric see the pteranadons, who escaped from their cage, flying away from the island.
Adam
Trivia: In the bar scene you can see a Jurassic Park pinball machine.
Question: When the boat is sinking and everyone is in the cage, what does Grant say to Ellie on the satellite phone and how does she know what it means and which island to go to out of the five?
Answer: Ellie's husband is in treaties and diplomatic relations and would be able to get a rescue group sent.





Answer: He says "The River, Site B." Obvisouly there is only one main river on Site B (the island). Ellie was smart enough to figure it out.
XIII
But how does she get a US navy battle group to turn up? Previously the US embassy wouldn't send anyone for a missing child, but a fleet for an old man off a very garbled phone call? As far as I remember, she had a fairly ordinary job/life in a suburb of the America.
Ellie's husband is Mark Degler, who works at the State Department, and it's with his connections that the rescue gets underway. Early in the movie Ellie told Grant he's bad about asking for help, and he should ask her anything anytime. Near the end, before their phone line was cut off, Ellie had heard the dinosaur roar and screams, so she knew Grant was in trouble.
Super Grover ★
I think it has something to do with what her husband does for a living.