Symfins + Turgly + Coreel and Gobwreck

Symfin: They first appeared long ago in prehistoric seas, and have since evolved into various shapes according to their regions. Their symmetrical bodies allow them to confuse predators.

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Turgly: Known as the ugliest bird, this Dark Pokémon lives where urban areas and forests meet. Although its meat is delicious, it is highly aggressive and will pursue trainers for miles if bothered.

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Coreel: It hides itself in a lump of coral, and strikes when prey approaches. The coral is highly resistant but its body is squishy and vulnerable.

Gobwreck: It has fused with its armor and can now swim freely and find its own food. Yet it still houses smaller animals, and they provide protection in return from parasites and occasionally other predators. It houses Ghoti s' (spelt Fish) to clean the parasites, an Octanchers like creature to keep it latched to the sea bed during storms, and Arrowcrabs to fight larger creatures.