Sea hare left this on glass…what is it?

[timmyrules]

Hi guys does anyone know what this smudge is that my sea hare left on the glass???

 

[crazyfishmom]

From this angle it looks like coralline but I’m probably wrong.

 

[ISpeakForTheSeas]

Hi guys does anyone know what this smudge is that my sea hare left on the glass???

What kind of sea hare do you have? Any pics of it?

The mass looks like an egg mass, but I'm not familiar with a sea hare species that lays their eggs on the glass at the moment (I'm not super familiar with sea hares yet though).

 

[twentyleagues]

Looks like eggs to me also. I am no where near as knowledgeable as @ISpeakForTheSeas so take what I say with a grain of salt. But the zigzag pattern of the mass does look like some invert egg laying I have seen.