Liz and I took a speedy little boat powered by some psyched Maori's out to view Sperm whales migrating. The coast of Kaikora is very special in that it drops down to far depths right off the coast. The wildlife you can see on this particular stretch of coastline is pretty rare.
Sperm whales, as we learned, hang out on the surface until it's time to hunt. At which time they float just under the waters surface then come up for one last blow before diving straight down as far as they need to. Because they are such careful and prepared divers, they make easy targets for whalers and are listed as vulnerable.