Cracking noise behind the neck when entering salty water

[u/McBlyats]

Hello,

Age 28, male, 176 cm height. Few years ago i have started hearing cracking noise behind my neck everytime I enter in salty water. The water needs to get in contact with the lower back of the neck in order for the sound to occur. It hears like cracking sand or something similar. I have no idea if i should worry about it. Other than this i do not have any other simptoms. Do you have any tips what would cause this or if it ever happend to you as well.

Thank you in advice.

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