Plus they were cannibals.
While I'd prefer to concentrate on the positive myths and and awesome mythical Gods and Goddesses they believed in. It was a pretty shitty belief system when it came to laws and things.
I'm talking about things like men and women could not eat together women were separated from society during their menses women were forbidden from eating pork, certain bananas, and coconuts fishing was restricted by season and people could not look at or touch an Ali’i or person with spiritual powers (mana), including their shadows.
These are the kind of things that ruin spiritual belief for people. They're so freaky about what the believe that they end up chasing people away.
On to the stuff that's cool now.KANE, the creator-god
LONO the God of Storm, Rain, and Fertility
KU the God of war and strenuous activities
And finally Kanaloa the god of Sea and Death.
The really cool stuff is more with the people though. I'm not sure where I found this but a while ago I read about how they would make this drink by fermenting some plant on the island and as they drank it it would cause something to build up in their skin causing them to look like lizard people. I believe the drink was called awa and it had some hallucinatory effects. They also believed heavily in family support and that the more time you'd spend with someone the stronger a spiritual tie you would have with them. These ties to them were in the form of strings called Aca chords or something like that I don't remember it was a while ago. But it starts out a string and can turn to a think rope allowing you to become closer to your loved ones spiritually or something. Pretty cool stuff if you ask me.