White orcas have been sighted at only 10 locations in the North Pacific over the past 100 years, according to Hiroshi Oizumi, a professor of marine ecology at Tokai University. The Nemuro Strait ...

This was once-in-a-lifetime event for our tourists, so all of them were overjoyed.” Hiroshi Oizumi, a professor of marine ecology at Tokai University, said there are two factors that can cause ...