hitchhikers/eggs from fresh live rock

[Murtaugh]

Just got a shipment from gulf live rock. Had 20 lbs overnighted. Been able to ID almost all the hitchhikers except, for these! Are these some type of egg?

 

[tzabor10]

Lucky you

 

[twentyleagues]

That is bubble algae.

 

[ISpeakForTheSeas]

Welcome to Reef2Reef!

As mentioned, that's bubble algae - it tends to be highly invasive, so it's generally recommended to remove it.