What does the National Ocean Service have to do with your Thanksgiving dinner? We bring you the answer in this special holiday edition of Making Waves.

Harmful algal blooms. They're called HABs for short. Heard of them? If you live in a coastal area or near the Great Lakes, chances are you have, but you may know them by the more popular name 'red tide.' HABs are caused by microscopic algae — tiny plants in the ocean — that grow out of control. As they bloom, they produce powerful toxins that kill fish and make shellfish dangerous to eat. In this episode, we take a look at three stories about how NOAA is addressing this serious problem.