The following recordings are submitted by just a few of our many skilled customers. Please check out their links, which will allow you to explore their work in more detail. Do you have an interesting recording? We'd love to hear it! Please contact us; we will sincerely appreciate your contributions! Make sure to provide information so that we can offer proper credits.

Kevin Colver, Soundscapes for Birders, Utah, USA
Frogs: Stereo recording of Columbia Spotted Frogs
Recording uses H2a-XLR hydrophones.
Hydrophones are placed about a meter apart in a tiny pond of about 4 meters diameter. Kevin notes that he strongly prefers the stereo effect as a recordist.
Listen to this recording on SoundCloud.
Also hear the sound as recorded above water, along with other of Kevin's recordings here.

Karine Dumont, Brussels, Belgium
Electronic Music/Sound Art
Recording uses the H2a-XLR hydrophone
The following are extracts from Karines original compositions, which were made from recordings of a drip system into a porcelain bowl. Compositions use differents delays, a frequency shifter, pulse combs and an harmonic generator

Mudbath 1

Mudbath 2


Tapio Liukkonen, Kaamos Sound
Ice Recording from the Kemijoki River, Finland
Recording uses the H2a-XLR hydrophone

Richard Devine, Devine Sound
SonicTerrain recording of the week: Maggots!
Recording uses a pair of the H2a-XLR hydrophones mixed with a pair of DPA 4060 lav microphones
Read the article and listen at Sonic Terrain, or listen at SoundCloud.
Also from Richard:
Hydrophone Recordings of Dolphins, Shrimp Feeding, and Hypostomus Plecostomus Fish
listen at SoundCloud.

Simon Forrester, Documentary Sound Recordist
Samples from the high arctic
Recordings use the H2a-XLR hydrophone
Excerpted from Simon's e-mail to Aquarian Audio:
"This file comes from a summer recording last year on the edge of the sea ice about 15 miles off shore from the most Northerly inhabited indigenous settlement in the world - Siorapaluk. I was trying to record Narwhals when two bergs smashed into one another, they must have been several miles away as there were none in sight, it's interesting to hear how the Narwhal and seal calls increase straight afterwards."

"The audio and picture were from Quaanaaq in the far North of Greenland for a BBC/Discovery series called Human Planet..." "I think the photo is of me trying to chip out a hole in the sea ice along a fault line with my ice axe so that I could bury the mic and record one plate rubbing against the other, I think it was around -50C that day and, as you can hear from the recording, your little mic not only survived the extreme temperatures but also managed to emerge unscathed despite the large pressures that must have been exerted as the two plates rubbed against it, a testament indeed to the quality of its manufacture."

Marlin Ledin, Apostle Islands Bike Expedition
Ice recordings from Lake Superior, USA
Recording uses the H2a hydrophone
Visit the Ice Sounds Page for recording samples, "The Lake Drums", "Crackling Plates", and "Bubbling Ice Cave".

Nathan Moody, Noise Jockey Blog
Sound Effects, Phonography
Recording uses the H2a-XLR hydrophone
Check out the blog for most recent entries.
Underwater Bowed Metal, Underwater Finger Cymbals, Hydrophonic Cocktail, Sump Pump, Magnet + Hydrophone

Glenn Edney, OceanBlue Adventures
Humpback vocalizations from the Kingdom of Tonga
Recording uses the H2a hydrophone and the UPA-1 preamp with an inexpensive digital voice recorder
Time 2:15, as submitted by the author. Compare these vocalizations to others on this page that are recorded in the northern hemisphere.

Capt. Gene Flipse, Conscious Breath Adventures
Humpback vocalizations from the Silver Bank, Dominican Republic
Recording uses the H2a-XLR hydrophone
The sample below is made from four clips of Gene's original recordings.

Listen to several more of Captain Gene's recordings from the Silver Bank on SoundCloud here.


Diane Okonek, Alaska Dept. of Fish and Game sanctuary manager
Round Island, Walrus Islands State Game Sanctuary
with support from International Polar Year and the University of Alaska, Fairbanks, Wildlife Day By Day program
Male walrus vocalizations from Round Island, Alaska
Recording uses the H2a hydrophone
The sample below is made from several clips of Diane's original recording.

Graham Nystrom, Graham Sound
Orca vocalizations from Haro Straits, Washington
Recording uses the H2a-XLR hydrophone
Three clips of orca whale vocalizations in our home waters of Haro Straits. Vessel noise in background

Robb Nichols, Aquarian Audio
Body Sounds: hydrophone as stethoscope
Recording uses the H2a-XLR hydrophone
After several inquiries, we decided to make a short demonstration recording where the hydrophone is used as an electronic stethoscope. Includes heart (subwoofer or good headphones required), breathing, and abdominal sounds.

Charles Stankievech: The DEW Project, Dawson City, Yukon Territory
Link to live stream from the Yukon and Klondike Rivers
A remote transmission station housed in a geodesic dome on the Yukon and Klondike Rivers continually records and transmits the sounds of the rivers flowing and the ice shifting using hydrophones embedded in and under the ice. A solar powered system, the installation runs 24 hours a day with a computer controlled LED lighting system generating a radiating beacon in the snowfield.


Spirit Of The West Adventures
Orca whale video soundtrack
Recorded through the mic on a standard camcorder. Whale vocalizations are played though the Honeytone amplified speaker, using a H1a hydrophone This is not a high-fidelity recording, but is a great demonstration of the inexpensive Honeytone speaker. See the setup and link to the video at YouTube though the Images page

Robb Nichols, Aquarian Audio
Recording uses the H2a hydrophone
The following recordings were made with little to no effort in the recording setup, using an inexpensive Zoom H2 recorder.
This humpback whale recording was captured while demonstrating a hydrophone to Trilogy Excursions of HI while on a very pleasurable scheduled tour to Lana'i in February of 2009. The recorder was being used as a preamp and patched into the stereo system for customers to hear.

This recording of reef sounds with humpback whales was made from a kayak while just offshore of Kihei, HI. The whales were approximately two miles offshore.

This recording of frogs was made in the pond behind our shop with my five-year-old son. We just put some fresh rechargeable batteries in the recorder and let it record overnight. Play this 30-second clip over again 750 times and you'll pretty much have experienced the whole recording (I think; I didn't listen to the whole thing.) Our UPA-1 preamp was included in the recording setup.

Christopher Bradbury
Miscellaneous Phonography
Recording of Chris' cat with with the H2a and CMadp, layered over track recorded with SP earbud mics

Mixed recordings of a clock and heartbeat, each made with the H2a and CMadp

H2a buried in the sand on the WA coast

Julianna Snapper
Five Fathoms Deep My Father Lies is a multi-site underwater opera staged across the globe
(video link to YouTube)
Recording uses two H2a-XLRs

Tomoko Sauvage
Music created from water droplets and other percussion techniques in ceramic bowls
Making of a rainbow (audio link to Archive.org)
Waterdrop performence (video link to YouTube) Recording uses multiple H2a-XLRs

Lobster Divers in Honduras
Recorded for Marketplace, American Public Radio
Claudine LoMonaco, Producer, Homeland Productions
Recording uses the H2a-XLR

The following MP3 files are just for fun. They are a sampling of recordings that customers have submitted over the years. All are recorded using now-obsolete hydrophone designs. We hope you'll consider sharing your newer recordings here!

Humpback feeding calls, Alaska Sea Adventures, 753K
Catfish in the Amazon, Mac Given, 68K
Hippos in the Lunga River, Glen Feldhake, 545K
Humpback Whales in Hawaii, Kent Noonan, 496
Orca Whales in Washington, Greg Milano, 1.4M
Pickeral Frogs in the Amazon, Mac Given, 117K
Rough-Toothed Dolphin in tank, Michael Hunt, 345K