From Maalaea: Whale Watching Tour Aboard the Quicksilver

Enjoy this 2-hour guided adventure on a double-deck power catamaran to watch the whales in their natural habitat. Depending on the whales’ behavior during your whale watching trip, you may see the whales slapping the surface with pectoral fins (their very long side fins), flukes (the tail), the peduncle (the strong muscles attaching the tail to the rest of the body) and the breach, this is when the whale rises completely out of the water and crashes down again.