Why it’s a hot spot: The Antarctic is a good feeding ground for orcas and it is estimated that half the world’s population (around 25,000) reside there. Tours circle the Antarctic Peninsula in search of dorsal fins cutting through waves, or to witness orcas crashing into icebergs to knock unsuspecting sea lions into the water where they can be devoured.
Where to see: Tours of the peninsula from Argentina’s Ushuaia are popular, with sightings of minke and humpback whales common. Trips from New Zealand to the Ross Sea in the eastern Antarctic are also rich with orcas.
When to go: February-March
Why it’s a hot spot: Neither heavy in numbers nor easy to spot, the lure of Patagonia’s orcas is their sophisticated hunting technique. Witness the lobos (meaning wolves, a local nickname given to the area’s predatory orcas) gulp down sea lion pups after purposely beaching themselves at high tide in order to capture their prey.
Where to see: Viewings are mainly land-based, with the beaches of Caleta Valdes, Punta Delgada and Punta Norte all good viewing spots.
When to go: March-April (Punta Norte) and September-October (Punta Delgada and Caleta Valdes)