Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Apr 12;151(4):2507–2520. doi: 10.1121/10.0010162

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2022 U.S. Government

0001-4966/2022/151(4)/2507/14/$30.00

All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

FIG. 7. — (Color online) Annual variations in SPDs, highlighting blue whale vocalizations between the months of August through December at 28 and 43 Hz.