NOAA's National Ocean Service

A hydrophone deployed underwater

Listening In: Heard of the hydrophone? It's an underwater device that measures ocean sounds from all directions.


Wildlife viewing is a popular recreation activity, but it is important to know how to interact with ocean wildlife so that you can make the right decisions. Irresponsible human behavior can disturb animals, destroy important habitats, and even result in injury to animals and people. NOAA Fisheries and NOAA’s Office of National Marine Sanctuaries developed the Ocean Etiquette program to promote ocean stewardship and minimize impacts to marine life and habitats. Take a minute to review our marine wildlife viewing guidelines.