From 7/16/26 - 7/24/26, I went on a trip to Cozumel to improve my Blackwater Dive skills. I wasn't necessarily looking for any nudis but I came across three that I will share here.
On the first day, I did two morning checkout dives to ensure that my gear was functioning.
We had a great dive guide named Maya who was from Canada. She found two slugs for me:
Thuridilla picta
On the very last blackwater dive, I left my camera on the boat. On purpose. I had forgotten to change the camera battery. I was ok with this and just went with my spotter light. Of course, as soon as I got down, I saw it. The Pelagic Nudibranch!!! I was sad because I didn't have my camera but ecstatic that I got to see it.
Phylliroe bucephala
Here is a picture of a pelagic nudibranch from Linda Ianniello:
https://lindaiphotography.com/black-water-mollusks/
I will find it again someday. In fact, I am already considering a couple of other Blackwater trips.
