Grant, Nicole and J.L. go on a camping trip, but when Nicole is swept away and injured in the rapids things go from bad to worse.

A change in the family by way of a proposal means that everyone in the soon-to-be-new family must learn to deal with change.

While volunteering at a wildfowl sanctuary, Nicole meets an agoraphobic ornithologist whom she must convince to operate on an injured falcon.

When Grant contracts the chicken pox, J.L. pledges to nurse him back to health ""for better or for worse."" Meanwhile Nicole and Jonah investigate a large number of fish deaths near a rural river.

When a monkey given to Nicole goes missing, her and Jonah discover a menagerie of wild animals belonging to a mild-mannered animal lover who rescues unwanted pets. When the city is forced to shut down the man's make-shift shelter, Grant races to save them all from destruction.

Nicole takes on a job babysitting to earn extra money, but faces quite the challenge in her rebellious blues-loving charge, Adam. When the boy tramples a nest of unhatched geese eggs, the Aquarium staff must work throughout the night to save the goslings' lives.

When his research proposal is inexplicably turned down, Grant resigns from the aquarium and tries to figure out why a power-wielding scientist is trying to blacklist him in the scientific community.

The Aquarium receives a generous donation of exotic fish and equipment as part of the last will of an eccentric millionaire. While Nicole and Jonah take a group of kids on an overnight expedition to the Aquarium, the millionaire's scheming sons decide to break in to claim what's rightfully theirs.

When Nicole and Grant come across an abandoned truck full of toxic waste in the forest, they organize a Skywatch using J.L.'s pilot colleagues to keep an eye out for companies illegally dumping their waste products.

Jonah attempts to join a forest fire fighting unit as a summer job, but his fear of fire stands in the way. He is forced to put his fears behind him in order to help a little girl stranded in the middle of a raging forest fire.

Jonah becomes jealous of his girlfriend's seeming interest in his new friend Larry, and his anger comes to a head when the duo join forces for their high school's annual car rally competition.

Grant and Jonah tackle a pair of bear poachers on a routine survey of the local population.

The Roberts family tries to uncover who has been secretly drugging the prize-winning racehorse of one of Nicole's friend's, causing her to loose an important race.

When Jonah & Nicole witness an elephant become spooked & rampage during a magic show, they bring in Grant to determine what is causing the animal distress. While they try to help her, her original owners scheme to get her back.

Grant goes up against a corporate businessman whom he believes is responsible for a garbage scow leak that caused loads of damage to a local ecosystem; Nicole wages her own battle against the businessman's granddaughter in a student council election.

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While doing a school project, Jonah befriends a refugee from Vietnam whose own tragic past is complicated by the bullying and taunting of his prejudiced classmates.

Jonah takes Adam to the open waters to record the sounds of whale communication where they come upon a father & daughter whose inexperience in the outdoors nearly leads to disastrous consequences.

The sudden appearance of a stray dog with apparent powers of premonition fuels the battle between science and the paranormal among the Roberts clan.

Jonah and Nicole enlist aboard a schooner and must prove themselves to its skeptical captain.

Mayhem abounds at the Aquarium as the staff holds a weekend murder mystery with the staff & their families playing the various roles involved. Added to the mix is an escaped convict who is swept up into the mystery while trying to evade the law.