Whale has used 52 Hz to call to another Whale for many years.
Chintana Sukphuy
Jidapa Rungraung
2025
2022
2016
2009
1987
2020
2011
1996
2005
1948
2002
1968
1991
1986
2013
1969
2021
2017
2008
1990
2000
1998
2007
2001
2023
1981
1985
2024