DolphinEar
Hydrophones

NEW WEBSITE for 2026! Please let us know if you have any problems .
email: help@dolphinearglobal.com

28 years of discovering sound

Since 1998, our continually updated hydrophones have been used on every continent and in every ocean for a wide variety of projects. We design our hydrophones to be affordable high quality instruments known for their ruggedness and versatility. Simple to use, their performance matches or exceeds that of many more expensive units

of happy customers worldwide
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Rugged & Versatile

DolphinEar Hydrophones have many uses. Our hydrophones perform in all watery environments and also in glaciers, underground, in volcano vents, in utero, in many industrial situations and more…
  • Rugged

    - Rugged: withstands Ocean pressures and handling abuse.
    - Waterproof: to 100 meters.
    - Thick epoxy case.
    - Hydrophone Operating Temperature: –40C to +60C.

  • Hydrophone features

    DE200 Series
    - Frequency range 7Hz – 22,000Hz.
    - Omni-directional configuration.

    DE PRO Series
    - Balanced output 600 ohms.
    - Frequency range 1hz – 24,000Hz.
    - Omni-directional configuration.

  • Connectivity

    DE200 Series
    - What type of connector?
    - Audio Output: MONO. Adjustable Level ~ 50 mW.
    - Preamp supplied with Line/Earphone Output

    PRO Series
    - Balanced Output - Standard 3 pin XLR connector

Whale & Dolphin Watching

Whale and dolphin watching

For tour boats or personal use, DolphinEar Hydrophones are perfect for listening to whale and dolphin sounds.

Seeing these majestic creatures is amazing, but listening to them lets us into their magical underwater world.

Hear and read more…

Turtle Nest Conservation

Plant one of our Hydrophones in the sand during the protect-monitor phase of a nest’s cycle.

You can accurately predict the date of emergence to within a couple days using this method. Which means more hatchlings making it to sea and more onlookers get to experience the magic.

Read more…

“I am part of the Ocean Isle Beach Sea Turtle Protection Organization volunteer team members! I absolutely love using the Dolphin Ear to hear the hatchlings in the nest—it adds another layer of knowledge and education when it comes to protecting the sea turtles.”

Leila

OIBSTPO

Field Recording

These are some of my favourite bits of kit, they’re brilliant. I love that aspect of fishing for sound underwater or putting geophones or hydrophones in glaciers, or underground

– Chris Watson, President of the Wildlife Sound Recording Society

Field recording – a whole world of unknown sounds to be discovered. DolphinEar hydrophones are obviously great in water, but they also make for wonderful contact microphones whose rugged design means you don’t mind getting them a bit mucky.

Read more…

Aqua Culture

 

A DolphinEar hydrophone can maximise the efficiency of existing or conceptual shrimp farming through acoustic demand feeders.

  • Determine exactly when shrimp need feeding, no guesswork
  • Reduce feed waste
  • Less contamination in the water
  • Save money on wasted feed
  • Environmental, health and food security benefits

DolphinEar hydrophones are more rugged and affordable than commercial hydrophone units. Our support team will assist with the technical implementation if desired.

Water based Recreation

 Whether sailing the seven seas or cruising inland waterways in your canoe, there is always something to listen to with your DolphinEar hydrophone: whales, dolphins, sea lions, fish, boat sounds, snapping shrimp…. Listen and read more

Custom Projects

Lightning Detection

 

Scottish Artist Katie Paterson wanted to recreate the feeling of a lightning strike. But she didn’t want to do it in the normal theatrical way by using strobes connected to a random sequence generator.

We adapted our equipment and designed a system which made her vision a reality. Read more…

Phonecall with a melting glacier

 

We built a custom DolphinEar wireless system which allowed people from over 130 countries to dial in to the mobile phone attached to the hydrophone and listen to the sounds of a glacier melting in real time. Listen and read more…

Aquarium Installations

Many aquarium installations have used DolphinEar hydrophones over the years. A button near the display activates the speaker system allowing visitors to hear the sounds of the inhabitants. In each case, we work closely with our customers to integrate the DolphinEar hydrophone into their particular system.

We've got a talented technical support team that are always intrigued about potential projects. If you think a hydrophone could be useful, contact us and we'll help you out!

Contact us

Contact Us

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