It was not officially revealed until February of 2008, when it was listed as a star of Giratina and the Sky Warrior. In early June of the same year, its Sky Forme was revealed, which takes on the Template:Type2 as a secondary type.
It is not known to evolve into or from another Pokémon.
Shaymin and Gracideas
Shaymin is a small, hedgehog-like creature. Its body is pure white. Its back is covered with green fur and has a pink flower with two leaves on each side of its head, which resembles the Gracidea flower, several Gracidea-like flowers also appear on its back whenever it feels comfortable, but when it senses an impending danger, it rapidly hides it back. Its legs are short and its underside is plump. Shaymin is the smallest legendary Pokémon to date. According to the Pokédex height of 0'08", it is also among the smallest Pokémon in existence, with its comrades being Diglett, Natu, Azurill, Budew, Burmy, and Chingling.
As first revealed by Japan's CoroCoro Magazine, Shaymin has two forms. The first (Land Forme) is the original form seen in Pokémon Diamond and Pearl. The second is the Sky Forme which debuted in Giratina and the Sky Warrior. Shaymin will change into Sky Forme and back if it touches a Gracidea. Shaymin can't be in this form at night or if it has contact with ice. Shaymin's Sky Forme has a canid-like appearance that also bears some resemblance to a small reindeer. It has a small, slender body. The fur on its back appears to have shifted into a mohawk; it has a red flower petal on the right side of its neck, looking like a scarf or cape, and flat, white ears that look like wings or antlers. It has a small ruff on the front of its neck and a stumpy tail.
Shaymin is a genderless species.
Shaymin have the ability to instantly purify any polluted area of all unclean things in the air and transform it into a lush field of flowers. They take in the polluted air, purify it inside their bodies, break it down into water and light, and release the purified substance in a violent, explosive burst. This ability is known as Seed Flare, their signature move. Its power varies on the type of pollution absorbed. Shaymin can also communicate with telepathy and sense the gratitude of others, hence its species classification, the Gratitude Pokémon.
Shaymin curled up
Shaymin have a habitual trait called "Flower Bearing." Each season, Shaymin gather in a flower field somewhere and migrate from there. This behavior is called Flower Carrying because a new field of flowers grow where they land. Shaymin are also attracted to areas where there is a lot of gratitude. Their personalities are almost opposite with each form — Land Forme is shy and easily scared, while Sky Forme is courageous and playful.
Shaymin live in fields of flowers. Since a Shaymin camouflages by curling itself up, it can easily escape people's notice, similar to Geodude on rocky terrain.
Shaymin made its debut in the 11th Pokémon movie, Giratina and the Sky Warrior, where it was fleeing from Giratina, after enraging it in the Reverse World. Shaymin thought that Giratina wanted to eat it. It premiered both of its forms in the movie. Shaymin also makes a minor appearance in Arceus and the Jewel of Life's credits where it stands gazing upon the land on a tree.
Bold indicates a move that gets STAB Italic indicates a move that gets STAB only from an evolution of this Pokémon A colored initial indicates that the move is not available to be tutored in this game, while a colored background indicates that the move is available.
| colspan="13" | Bold indicates a move that gets STAB Italic indicates a move that gets STAB only from an evolution of this Pokémon A colored initial indicates that the move is not available to be tutored in this game, while a colored background indicates that the move is available.
This has been rectified in Pokémon Platinum, as neither Pokémon will appear without the event, even if the player manages to access their area.
Land Forme Shaymin is the first pure Grass-type legendary Pokémon.
Although Shaymin is a legendary Pokémon, normal wild Pokémon battle music plays while battling it. It shares this with Cresselia, Latias, and Latios.
Shaymin is implied to be behind the creation of Floaroma Town, as one person notes it was a barren wasteland until one day flowers mysteriously covered it all after someone gave thanks for life's blessings. Additionally, the woman who gives the player a Gracidea flower can be found in Floaroma Town.
Shaymin seems to appear only when someone gives thanks for a significant blessing in their life. A girl in Floaroma Town states that the flowers the town is famous for appeared after someone gave thanks for nature's blessings. With Oak's Letter, Shaymin will lead the player to Flower Paradise after they give thanks for their Pokémon journey at the white rock on Route 224.
Shaymin's Sky Forme has a different cry than its Land Forme, making Shaymin the first Pokémon to have different cries for different forms, and the first Pokémon to change its cry since the player character's Pikachu in Pokémon Yellow.
Due to the Pokédex only registering the first forme's cry, it is impossible to listen to the Sky Forme's cry on it. This is because Shaymin traded in their Sky Forme revert to Land Forme, and wild Shaymin are always in their Land Forme. Also, Pokémon battled between players are not registered in the Pokédex, meaning that it is impossible to register a Sky Forme Shaymin before the Land Forme.
Shaymin is one of two legendary Pokémon capable of using the F.E.A.R. strategy (the other is Mew).
In Sky Forme, Shaymin is the only legendary Flying-type Pokémon weak to Flying-type attacks.
Shaymin is one of two Pokémon whose ability changes depending on its form, the other being Giratina.
A Shaymin caught at the Flower Paradise in Pokémon Platinum will be a fateful encounter Pokémon, making it the only Pokémon able to be caught from the wild that has this status. This is to allow it to transform into Sky Forme, as non-fateful Shaymin cannot transform.
This may be part of the reason why Oak's Letter was never released for distribution to Diamond and Pearl, as the Shaymin in those games, even if it is caught legitimately, will not be a fateful encounter Shaymin and thus not be able to transform. The reasoning behind disallowing this, of course, was to disallow those who had cheated to get Shaymin and those who used the Surf glitch and tweaking to do so from obtaining the otherwise-special Sky Forme Shaymin.
Sky Forme Shaymin has the highest base Speed of all Grass-types.
Fans have nicknamed Shaymin's Sky Forme 'Skymin'.
Land Forme Shaymin is the shortest legendary Pokémon.
Shaymin is based on a hedgehog. However, its white body and the grass-like fur on its back makes it somewhat resemble a Chia Pet as well. Moreover, when Shaymin (Land Forme) blooms with flowers, as seen in the anime, Shaymin appears as a bouquet of flowers, which serves to emphasize Shaymin's role as the Gratitude Pokémon. On the other hand, Shaymin's Sky Forme shares most of its traits with a small, young terrier-type dog, but its sprightly behavior, its affinity for flowers, and its ability to fly bring to mind faeries. Shaymin's Sky Forme has a few aspects that resemble that of a reindeer as well.
Its name is possibly a combination of 謝 sha (thanks/gratitude) or ジェイド jeido (jade), which is one of Shaymin's most dominant colors, and 蝟 harinezumi (hedgehog). Its name could also be a combination of shay and vitamin. Also, shaman can be pronounced like Shaymin, so it may be like a mythical shaman. In addition, the name Shaymin may be a corruption of the Hebrew word Shamayim, which means "sky" and is the name of the first heaven in Jewish mysticism. This correlates directly with Shaymin's Sky Forme.