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World Oceans Passive Acoustic Monitoring Day
Listening in for World Oceans Day

Scientists all around the world participated in a global study of aquatic sound on June 8th, 2023 and 2024. Underwater sound recordings from over 400 sites all over the world will be shared to create a snapshot of the cacophony of noises generated by wildlife and humans.

This year we are back!

Listening once more to the sounds below the surface on World Oceans Day. With these recordings we will collaboratively explore what ocean sound means for animal behavior, biodiversity and ecosystem integrity.

Start listening now! Scroll over the sites with stars to hear some of the sounds that came in from June 8th 2023.

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Unidentified water bug (Order Hemiptera)

.
buzz train

recorded by Xavier Raick at University of Liège

00:00 / 00:07

Bottlenose dolphin (Tursiops truncatus)

 .
Bray sounds- grunts or gulps
 read more
recorded by Susanna Quer at Marine Directorate, Science Evidence and Data Division

00:00 / 00:04

Unknown reef animal




 harmonic tonal call

recorded by Michelle Schärer-Umpierre at HJR Reefscaping

00:00 / 00:02

Epinephelus striatus (Nassau grouper)



agonistic call - repeated pulses

recorded by Michelle Schärer-Umpierre at HJR Reefscaping

00:00 / 00:04

Unknown reef fish
.

series of downswept tonal grunts.
.

pulse train

recorded by Aran Mooney at WHOI Sensory Ecology and Bioacoustics Lab

00:00 / 00:04
00:00 / 00:02

Blue whale (Balaenoptera musculus)
   





D call

sounds have been filtered and amplified for hearing, but may require headphones and volume turned up, as the calls are very low frequency

recorded by Will Oestreich and John Ryan with MBARI & SanctSound

00:00 / 00:11
00:00 / 00:09

Silver perch (Bairdiella chrysoura)
   

chorus
read more


chirp
read more
recorded by Eric Montie at University of South Carolina Beaufort

00:00 / 00:03
00:00 / 00:04

Atlantic croaker (Micropogonias undulatus)




knocks
read more 

recorded by Eric Montie at University of South Carolina Beaufort

00:00 / 00:08

Spotted trout (Cynoscion nebulosus)

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chorus
read more

recorded by Eric Montie at University of South Carolina Beaufort

00:00 / 00:10

Oyster toadfish (Opsanus tau)

.
boat whistle
read more

recorded by Eric Montie at University of South Carolina Beaufort

00:00 / 00:05

Bomb fishing
.

echoing blast
 bomb fishing is illegal but still employed in certain regions, read more about the current state of the practice

recorded by Ben Williams at University College London

00:00 / 00:03

Rioja tree frog (Boana riojana)





modulated call with 2 notes (recorded underwater)

recorded by Martin Boulhesen at Instituto de Ecorregiones Andinas, UNJu-CONICET

00:00 / 00:01
00:00 / 00:01

Unknown sounds


rattle


 creaking
recorded by Lucille Chapuis at La Trobe University

00:00 / 00:17
00:00 / 00:11

Echosounder



 pinging


recorded by Renata Sousa-Lima with UFRN Laboratory of Bioacoustics & Maria Isabel Goncalves, Lara Lopes, Alice Lima with UESC Projeto Baleias na Serra

00:00 / 00:30

Guiana dolphin (Sotalia guianensis)






whistles

recorded by Renata Sousa-Lima with UFRN Laboratory of Bioacoustics & Maria Isabel Goncalves, Lara Lopes, Alice Lima with UESC Projeto Baleias na Serra

00:00 / 00:02
00:00 / 00:03

Snapping shrimp (family Alpheidae) and unknown fish


.

snaps and grunts

recorded by Rachel Probert with Sea Search Research & Conservation

00:00 / 00:10

Bottlenose Dolphins (Tursiops truncatus)
.

echolocation
.

echolocation & whistles
.
.
brays  & whistles


recorded by Paul Thompson with the University of Aberdeen

00:00 / 00:09
00:00 / 00:06
00:00 / 00:09

Unknown Fish

.

pulse trains

.

knocks

recorded by Xavier Mouy with NOAA Fisheries and Coral Morphologic

00:00 / 00:08
00:00 / 00:06

Unknown reef animal




 harmonic tonal call

recorded by Michelle Schärer-Umpierre at HJR Reefscaping

Unknown reef animal




 harmonic tonal call

recorded by Michelle Schärer-Umpierre at HJR Reefscaping

Unknown reef animal




 harmonic tonal call

recorded by Michelle Schärer-Umpierre at HJR Reefscaping

Unknown reef animal




 harmonic tonal call

recorded by Michelle Schärer-Umpierre at HJR Reefscaping

Guiana dolphin (Sotalia guianensis)



echolocation clicks and whistles

recorded by Renata Sousa-Lima with UFRN Laboratory of Bioacoustics & Maria Isabel Goncalves, Lara Lopes, Alice Lima with UESC Projeto Baleias na Serra

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