Abstract
Killer whale (Orcinus orca) predation on elasmobranchs (sharks and rays) is not often reported. In New Zealand waters, killer whales captured and ate thresher (Alopias vulpinus) and smooth-hammerhead (Sphyrna zygaena) sharks. Both species were not reported previously as prey of killer whales. These observations help support the idea that elasmobranchs are a main prey type for New Zealand killer whales; ten species of elasmobranchs are now recorded as prey for this population.
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