| During the first four months of the year, the waters around Mexico's Pacific Socorro Islands are home to humpback whales as well as several varieties of shark, including scalloped hammerheads, Galapagos sharks, whalesharks and silkies - plus the famous resident population of diver-friendly giant manta rays (above). The Nautilus Explorer is a Canadian-built liveaboard said to offer a high level of comfort and to be CCR-friendly. One-week trips cost around£1500, plus flights and transfers. |