although it is a bit pricey, but this is the best seafood restaurant in rio. they serve the whole lot! too bad when i was there, they didn't serve alaskan king crab legs, but according to the waiters, it is quite common. dont get your belly too full because their dessert is also delicious. expect to gain 1-2 kg after going to this place, totally worth it!
the place is quite unique, some kind of pirate ship. if you are a guy, go to the toilet, you will be delivering your "water" on an ice bucket haha! it is located right across copacabana beach, so you can always play at the beach until late, then fill your empty stomach here. must go to place in rio