Oyster seeding in Sea Otter Sound, Prince of Wales Island, Alaska.

Growing mussels on a raft with a net.

Growing mussels using a sock.

Ray RaLonde describes the anatomy of a Pacific oyster.

The Secchi disk is used to measure water quality. Ray RaLonde demonstrates how to use the device.

The Van Dorn bottle is used to obtain water samples at selected depths. Ray RaLonde demonstrates how to use the device.

Barbara Morgan, OceansAlaska Marine Science Center,  explains how to grow algae.

Part of a series on how to operate a commercial oyster farm in Alaska.

Part of a series on how to operate a commercial oyster farm in Alaska.

This video tells the history of Alaska's salmon hatcheries and describes present-day procedures and operations. In Prince William Sound and other Alaska fishing areas, the release of healthy young salmon into the ocean has resulted in high returns of adult salmon. Hatcheries have helped stabilize the up-and-down cycles of wild salmon runs. 

Oyster cleaning with a tumbler demonstrated.