UW News
Zhongxiang Zhao
November 21, 2016
How to monitor global ocean warming – without harming whales
![map with stripes](https://uw-s3-cdn.s3.us-west-2.amazonaws.com/wp-content/uploads/sites/6/2016/11/04145039/itot_map-150x150.png)
Tracking the speed of internal tides offers a cheap, simple way to monitor temperature changes throughout the world’s oceans.