Climate change is affecting salmon migration. Coral die-offs off Australia in the summer of 2024 are linked to rising Pacific temperatures. The world’s largest and most devastating sponge die-off has been recorded off New Zealand. Global warming will reduce the survival rate of shark embryos during spawning by up to eight times. The University of California Institute of Marine Science, along with a large team from other institutions, has created early warning systems that predict where marine heat waves (MHWS) will occur.