What is that Noise

[ATJ]

I heard whales on my dives on Saturday and Sunday....

Humpback Whales are on their migration back from the Great Barrier Reef to the Southern Ocean.

 

[Anthony in NC]

All of my salt water diving has been off the coast of North Carolina, so mostly wrecks and artificial reefs. I asked my buddy on wednesday and he didnt have any explanation.

Around here (North Carolina) we call them "pistol shrimp".
We Asked a Marine Biologist to Explain Pistol Shrimp Powers

 

[RyanT]

Yep, snapping shrimp. They are pretty neat little critters. They aggressively defend their burrow/shelter with a snap of their over-sized claw. When they pair for mating, both the male and female will then defend the burrow against other shrimp. They are tiny 3-5 mm, so given that they can create so much noise with their claws is pretty impressive!

Alpheus heterochaelis

 

[lexvil]

Sorry, this does not help me understand what you are hearing. Can you describe it better? What location(s)?

Shhhhhh tic shhhhh tic

 

[jonhall]

Many different sounds are common if you pay attention to them - on land I've seen people not hear sirens and other loud noises because of the total attention to or stress created by another activity they were doing when the loud noise occurred.

The only sound I don't want to hear:

 

[smb1]

Some first stage regulators are designed to emit a small stream of bubbles whenever they are pressurized. Could be that.

 

[pauldw]

Plankton screaming as they are eaten by fish

Can you still hear the plankton screaming at night?

 

[Pressurehead]

I would worry if I did NOT hear sounds like that where I dive, it's a noisy place.

Give a listen!

Soundscapes – Audio Gallery : Center for Marine Sciences and Technology (CMAST)

 

[RyanT]

Can you still hear the plankton screaming at night?

Thank you Dr. Lecter!

 

[BRT]

If you are in the tropics it may be parrot fish. Crunch....crunch.....crunch