ID please...good or bad

[cment]

Never seen these guys before, they're about the size of a sand grain. I found a few of them on my glass for the first time today. Anyone know what they are...?
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[ringo®]

Yup

 

[cment]

barry_keith;939560 wrote: Hydroid

thats what I thought...should I be worried? I removed the 3 I saw but Im sure theres more than that. How can I remove them naturally or any other method?

 

[ringo®]

Airline tubing.....they should sick right out.