"Rattlesnake Crystal" is the 21st episode of the second season of Wild Kratts, originally airing on PBS Kids on August 19, 2013. Overall, it is the 61st episode of the series. The episode was written and directed by Martin Kratt.
In this episode, while deciding where to adventure next, the Tortuga loses altitude and crash lands in the Sonoran Desert. Although the Kratt brothers are excited to discover the various creatures that inhabit the Sonoran Desert, Koki is worried, and she says that the Tortuga will permanently shut down if they do not find a fresh stock of rare tellurium crystals. The Kratt brothers begin the search, and as they try to stay on track, they stumble upon a diamondback rattlesnake. Knowing how it senses its surroundings, the Kratt brothers race to find some tellurium and save the Tortuga.
The episode begins with a live action segment. The Kratt brothers find a western diamondback rattlesnake in the Sonoran Desert. Afterwards, they ask their "What if?" question and the show transitions into the cartoon segment.
The Wild Kratts are deciding where to have their next adventure, when their Tortuga HQ crash lands in the Sonoran Desert. Although the Kratt brothers are exited to be in this environment because they have not yet adventured here yet, Koki is worried because the Tortuga's supply of tellurium crystals, which provide power to much of the Tortuga, is flaking away. If the tellurium were to be completely spent, she says, the Tortuga will permanently shut down. The Kratt brothers then head out to find some tellurium.
The Kratt brothers get distracted after looking at the several animals of the Sonoran Desert and somewhat forget that they are searching for tellurium. When they stumble upon a western diamondback rattlesnake, they miniaturize and follow it into a ground squirrel tunnel. They call Koki and Aviva, telling them that they should make a Rattlesnake Creature Power Disc so they can gain senses like the ability to sense heat to find tellurium. Since creating a single disc would use a large amount of power, Aviva instead modifies a disc of a similar animal (Eyelash Viper Power). After she finishes, she gives the discs to Jimmy, who manually delivers them to the Kratt brothers. The Kratt brothers activate their Creature Power Suits and slither back into the ground squirrel tunnel network. They find some tellurium crystals sticking out of the earth; however, it falls down into a cavern leading to more tunnels. The Kratt brothers enter one of the tunnels, where they find a rattlesnake hibernating chamber. At the very end is a pile of tellurium crystals. They grab as much as they can carry, slither out of the tunnels, and return to the Tortuga. Koki takes the tellurium crystals and throws them into the core a few split seconds before the last of the original tellurium crystals completely disintegrate. The lights of the Tortuga then turn on and the Wild Kratts cheer.
The show transitions into the concluding live action segment. The Kratt brothers look around for rattlesnakes in the Sonoran Desert using radio telemetry. Afterwards, they conclude the episode by saying "Keep on creature adventuring; we'll see you on the creature trail!"
- Rattlesnakes hunt using sharp eyes, tongues that can pick up scents, and infrared vision derived from its two pit organs.
- A rattlesnake gives off a warning call by making a rattling sound with its rattle, which is located at the back.
- During the emergency landing, the original Tortuga is seen falling from the sky, while the second version is seen running into the desert ground.
- The Tortuga's power source (tellurium) is revealed.
- Martin is the only crew member to not have a seat.
- The rattlesnake species in this episode is the western diamondback rattlesnake (crotalus atrox).
- On August 23 2016 a DVD named "Wild Reptiles" will be released which features this episode.
- During the beginning of the episode there is a verbal disclaimer warning not to touch or pick up rattlesnakes. Surprisingly other eps featuring dangerous animals like "Crocogator Contest" and "Search for the Florida Panther" do not have those warnings. However in "Spirit Bear" Live action Martin and Chris do insist never to approach a wild bear.