Warming Seas Accelerate Sea-Level Rise and Threaten Marine Life

The world's oceans are getting warmer and more acidic.

They have absorbed much of the extra heat and carbon dioxide produced by human activities.

Sea levels are rising faster than they did in the past.

Hotter seas can make heatwaves on land stronger, especially at night.

Warm water is also harming coral reefs and changing tiny ocean plants called phytoplankton.

Many coral reefs recently experienced temperatures that can cause bleaching.

Four emperor penguin colonies failed to raise chicks during a year with very little sea ice.

The Mediterranean and Black Sea have experienced unusually strong and lasting heatwaves.

Scientists say these changes show that the ocean is changing quickly.