This is Bluebell the glowing axolotl being a proud home owner of a glass jar. She glows under a blacklight due to having the GFP gene from the jellyfish, so she's part squee and part science.

Though I've long been a huge Joanna Newsom fan, I'd never bothered to look up one of the titular characters from her song "Clam, Crab, Cockle, Cowrie..." until now, I mean. Because this cowry/cowrie (both are acceptable) is both a lovely whatsit and just a lovely thing in general. Such vibrant colors, oh my!