Nudibranchs are commonly known as sea slugs, and scientifically fit in the order of soft-bodied marine gastropod mollusks. There are several great things about nudibranchs. The first is that many are highly photogenic, the second is that they have interesting features such as feathery rhinophores, and the third is that they don’t move very quickly so you can document the first two attributes.
It’s a huge help having friends who have been photographing and identifying nudibranchs for years. They can spot them far more easily while diving, then after we’ve surfaced let you know what you’ve seen. Who knew slugs soft-bodied marine gastropod mollusks could be so much fun.
They are amazingly beautiful. However I did read the line “soft-bodied marine gastropod mollusks” as “soft-boiled”. I really don’t want to try eating them!