The tourist's dream of fresh fish at a beachside pub is often a fantasy in South Florida. Too many restaurants offer the same dry, tasteless grouper between slabs of boring bread. Not here. The Whale's Rib is the neighborhood dive where Hillsboro cops grab takeout while a constant horde of shorts-and-sandals customers queues up for a seat. Inside, the wood-paneled walls are decorated with license plates and the mounted jawbones of a 305-pound bull shark. Kids slurp Coke out of small pitchers. From the kitchen in the center of the dining room, someone shouts, "Dolphin sandwich." That's why many people are here — the fresh dolphin Key West sandwich. The spice of the blackened fish pairs perfectly with creamy Thousand Island dressing, topped with crunchy red cabbage and melted Swiss cheese, all on a hearty, toasted bun. Eat this with a bowl of thin-sliced potato "whale fries" and you'll never need a Big Mac again.