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Poseidon is an exotic white longhaired Chinchilla cat. He is Rita's closest friend and companion, guarding her house and possessions and also has his very own mystical secret.

Once Poseidon stepped on some mermaid potions and was able to transform into a human form. Right before he did that he made contact with Evie, and then took her form. Poseidon left the house with David and went to Ocean Cafe and later to the beach, where he got to try chocolate milk for the first time. He was turned back into a cat by Sirena.

On another occasion, Erik was accidently transformed into Poseidon's replica when Ondina tried to replicate a pearl and accidently hit the mirror with the spell, causing it to bounce back to an urn containing golden spider coral. The substance sprayed on Erik and Poseidon, causing the former to transform. When Ondina tried to reverse the replication spell, it created two more replicas instead. Mimmi managed to replicate the golden spider coral and combine it with the replication spell to restore Erik.

Trivia[]

  • Poseidon is named after the Greek sea god of the same name, and considering the fact that Rita is a mermaid, this makes it possible that Greek mythology is true in the H2O universe.
  • Every merperson, except Rita, Weilan, Zac, Evie, and Erik (who have all been accustomed to land life before first seeing him), has been at one point frightened by his presence.
  • Despite being feline, Poseidon serves more or less as a guard dog for Rita's grotto; since mermaids who have not lived on land before are taught to irrationally fear cats since they love fish. The presence of such a "watchdog skill" confirms that Poseidon is a very clever and loyal feline being because cats, unlike dogs, are much more difficult to train.

Gallery[]

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