[thewayfarer]

Orcas do have large populations near Antartica, Norway, and Alaska, but they also have large populations along the American West Coast, Mexico, and Australia. The Global Biodiversity Information Facility has some good maps of observation recordings around the world for these two species.

Orcas - https://www.gbif.org/species/2440483

Great white sharks - https://www.gbif.org/species/2420694