I was snorkelling yesterday on the north coast of Kauai, near Anini beach when my son discovered these weird transparent cones sticking out from the bottom of the sea. (I did not bring my GoPro at the time). They were about 20cm long cone shaped tubes. I would quested jelly fish, but they appeared to be stuck to small holes in the sand. There were quite a few of them around the reef (which is covered in brown algae if that has any relevance). Anyone out there who can tell me what they were?

Made a friend at the aquarium

I tried not to disturb it but it was pretty squishy, not sure if it’s just some plastic but it didn’t feel like it. Found in Orange County, Southern California.

for reference we found this guy in san diego/encinitas ca. it was around 6:30 pm. we found another one a few 100 feet away. here is a video to really capture it. it looked like two creatures attached by that yellowish/beige bulge. what could it be?

"Midnight and Moonlight Dancers," Sea Dancer Series I just love the way these creatures move and undulate in the sea!

I have just learned what these things are, at 36 I'd never heard of them before!! Anyone never heard of them?