What is this?

[SaltyShel]

I was vacuuming some cyano out of my tank last night, so I got the hose into the sand bed really well in an attempt to rectify the previous owners (and my dads while he had it for 6 months) long term neglect….

i don’t know where this came from, but I saw it sticking up out of the sand, so I scooped it out of the water. I wish I had better pics but this is really the best I could do. Also, I already dumped it out with the old water so it’s gone, and I don’t have it anymore for better pics. if anyone knows what this is, I would love to find out lol. This thing is just solidifying the belief that the previous owner literally took sand, rock, and water from the actual ocean.

 

[sixty_reefer]

Trap door from a snail

 

[SaltyShel]

Trap door from a snail

What’s that?

 

[sixty_reefer]

What’s that?

Google bobbit worm, then press images. Mum and dad may be living in the tank