Hawaii State Law: Unlawful to take, break or damage, with any implement, any rock or coral to which marine life is visibly attached or affixed. HAR 13-95. A resident of Hawaii may collect up to 5lbs of dead coral or rubble per day from the beach areas.
This may be a state law. But according to the airport inspector as long as its not an agricultural product they don't care. OAnd this was all dead seemingly clean rubble and rock. No corals. No plants. And if you read into that law a bit differently, it states that you cannot break off parts which i did not. I simply pulled them off the beach as they washed in. And if something was inside the rocks. So be it. All I've really got is an aiptasia outbreak. Nothing more
Also my sister is a resident on Maui. That's the only way I could even afford to go there. Lol.
So in the end it's all semantics. I was allowed on a plane with a suitcase 1/3 full of live rock. I paid for the extra weight in my bag. So no worries. It's not like they are gonna come and find me now for it