Which ecotype of killer whale is known for preying on marine mammals like minke whales, increasing local risk in areas like the Salish Sea?

Answer

Transient (or Bigg's) killer whales

Transient (or Bigg's) killer whales are the ecotype known for preying on marine mammals, placing local minke populations under higher scrutiny than areas dominated by fish-eating resident orcas.

Which ecotype of killer whale is known for preying on marine mammals like minke whales, increasing local risk in areas like the Salish Sea?
PredatorWhaleMinke whale