White spot on favites?

[COOTS]

Hello all! New to the hobby! Is this white spot/substance coming out of my favites something I should be concerned about? It is located at the bottom of my tank in low to medium flow and medium lighting. Thanks for your help!

 

[vetteguy53081]

Hello all! New to the hobby! Is this white spot/substance coming out of my favites something I should be concerned about? It is located at the bottom of my tank in low to medium flow and medium lighting. Thanks for your help!

Hard to depict under heavy blue lighting
Please post pics under white lights

 

[COOTS]

Hard to depict under heavy blue lighting
Please post pics under white lights

Hope these are better. Thanks for your help!

 

[vetteguy53081]

Hope these are better. Thanks for your help!

Thanks for pics. It appears to be some sort of nudibranch but cant see whole body
Unless you placed it in there- get rid of it. While some nudibranchs which are few can be friendly, many are not and will cause havoc