Craig Kastelle, NOAA Fisheries Alaska Fisheries Science Center in Seattle, WA

What does a fish use its otoliths (ear stones) for and what can we learn from them? Join us to learn how we can tell how old a fish is, and other ways that scientists can use otoliths to study fish.

Resources to access at home:

» National NOAA Fish Age and Growth Page and Alaska Age and Growth Procedures for Otolith Examination
» Fish Age and Growth Research in Alaska
» Microworlds: How Old is a Fish? – video
» Microworlds: What do Marine Mammals Eat? – video