During the holiday season, thoughts often turn to finding opportunities to do good for others. Cruise lovers with a heart, your ship has come in. Check out this Caribbean cruise that is using social media such as Twitter to highlight the many ways that travelers can give back on vacation.

If you're thinking about a last-minute holiday vacation in December, consider a cruise. Cruises can be one of the best vacation values available, especially during this holiday season. Some cruises we found are currently discounted by up to 70% and many offer exceptional deals.

Discover a world of amazing creatures in the Galapagos Islands, the earth's first World Heritage Site. Cruisers come face to face with friendly sea lions, giant tortoises, penguins, marine iguanas, colorful birds, and a variety of other exotic species. This is one trip you won't want to miss.

Costa Maya is one of the Western Caribbean's hottest ports of call. This lovely region is home to beautiful beaches, exciting adventure tours and spectacular Mayan ruins. The town of Mahahual is a favorite among cruisers. Believe me – this is one cruise port you won’t want to miss.

If you're looking for a convenient holiday vacation that offers a good value, consider a cruise. Holiday cruises from close-to-home ports will take you to those same sunny beaches, sometimes for less than the cost of a round-trip air ticket. So book early and enjoy a festive holiday at sea!

Cruise lines have strict minimum age policies and documentation requirements that apply to infants as well as guests under 21 years of age. Make sure you're aware of all of these age and documentation requirements to avoid being denied boarding without refund and miss your cruise.