u/Sulphurousous

Interestingly enough, the only known species of Cuttlefish that is poisonous. The lethality of the poison is allegedly on a similar level to that of a Blue Ringed Octopus.

A cute Glossodoris Atromarginata nudibranch, found whilst exploring the shipwreck of the King Cruiser ferry in Phuket.

I’m currently designing a macro snoot for my Sea&Sea YS-D3 and was looking for some thoughts/advice. It’s a 3D printed design, printed in ASA (the final version will be black). My question is do I need vent/drainage holes? I have placed a diffuser half way down the snoot to soften the light so are the vent holes shown at the bottom enough to equalise the pressure inside the snoot?