Aremata-Popoa and Aremata-Rorua
In the Tahitian story of
Rata 'Aremata-Popoto ("tidal wave") and 'Aremata-Roroa ("long wave") are two ocean-dwelling monsters that Rata must overcome.
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Aremata-Popoa
[Polynesian] "Short Wave". One of two ocean demons who are greatly feared by Polynesian mariners because they are at the mercy of their immense power. The other demon is Aremata-Rorua.