Nation Millions of mussels, clams and other marine creatures die from heat wave ‘catastrophe’ July 12, 2021July 12, 2021 Sudiksha Kochi, USA TODAY Comments Off on Millions of mussels, clams and other marine creatures die from heat wave ‘catastrophe’ The heat wave, with record-breaking temperatures above 120 degrees, has cooked millions of mussels, clams and other sea creatures alive in Canada.