From October to February, sperm whales, humpback whales, and pilot whales make their way from the cold Atlantic to the warm waters of St. Lucia to breed and mate. Whale-watching tours leave from Castries and some of the other towns on the west coast and sail north to south to spot the whales, breaching and spouting, from a safe distance. Over the last few years, sperm and pilot whales have more frequently been spotted than humpbacks. It's not unusual to see schools of spinner and bottlenose dolphins along the journey. Some whale-watching trips offer lunch as well as a chance to snorkel and swim, so shop around for the excursion you want.