I guess you could say that? Legend says they're the fruit of the Sea Devil and if you eat them you get special powers but in exchange the sea itself rejects you. It's a pretty risky gamble because you never know what power you'll get! It could be something amazing like... turning your body into fire or being able to sprout bodyparts wherever you want. Or it could be something shitty, you just never know until you've taken a bite and then it's too late.