Do orcas have good eye sight?

A Depends on the whale. Whale eyes have U-shaped irises in bright light. These irises open up to large circles in darkness. This provides good vision in a wider range of brightness than in many other species. Toothed whales tend to have smaller eyes, but these rely more on 'seeing with sound." They use echo-location for a sort of 'sonic vision' that is very keen.