I've blogged before about the different sounds one hears while living on a boat. I actually keep a pair of earplugs near my pillow because sometimes sounds keep me up at night. Most of the sounds can be quieted by adjusting lines and fenders. Lately, I've been reminded of a couple sounds that cannot be hushed: those of the shrimp and the croakers. I can't describe the sounds to you but I can tell you that, from time to time, I've spent hours searching the boat high and low, trying to pinpoint the cause of the "pinging" or the "creaking". If only the shrimps and the croakers could see me searching... they'd surely get a chuckle.
Here are a couple of videos that will give you a better idea of what they sound like... in reality, the pistol shrimp sounds a little less like a pistol and the croaker sounds a little more like a... um, well, it just sounds different through water and fiberglass, but you'll get the idea.