Nick and his friend Marta decide to investigate when a mysterious fire starts near a Florida wildlife preserve and an unpopular teacher goes missing.

Bella, twelve, and Marcus, thirteen, join Fabien Cousteau's research team off the coasts of South Africa and Australia as they try to find and tag an extraordinarily large great white shark. Inserts include facts about sharks and other marine animals, equipment used by researchers studying sharks, and more.

Young conservationist Chang overcomes the odds to save and return an elephant to its natural habitat.

"An ebullient, funny novel about the friendship between a brilliant young girl and a perceptive squirrel monkey, the power of youth, and the way forward for a planet in crisis"--

After a summer of tagging sharks off the west coast of Florida, Sabina, Maribel, and Luke have a new assignment: searching for "survivor trees" that are resistant to the disease that is destroying the state's citrus trees; the search takes them to the remote mangrove islands of Sanibel Island, where they discover Spanish oranges, a grave, an immense saltwater crocodile, a reclusive woman who believes that the ghost of a dead king, beheaded by Spanish...

When the Alden siblings go camping on Padre Island, they help save a rare type of sea turtle from a mysterious sabotager.

The Aldens head to Ladakh, a territory in northern India, to help save the elusive and critically endangered snow leopard.

Twelve-year-old Koby, who has lost a foot in an accident, sees a chance to prove her self-reliance to her parents when she tries to rescue two stranded pilot whales near her home in the Florida Keys.

"A young conservationist overcomes the odds to return a sun bear to its natural habitat"--Provided by publisher.

Emmanuel, an employee of the Rwandan National Park, saves several gorillas from poachers and sets out on a tracking expedition to count gorillas for an upcoming census.