Short looping animation made entirely in Blender- I hope you like it 
[Sir David Attenborough* voice]
‘They’ll continue this bizarre ritual for about an hour, by which time both will be dead: the puffer fish from exhaustion; the seahorse from embarrassment. We don’t know why they do this. Puffer fish are idiots’
*famous naturalist and broadcaster in the UK with a distinctive voice and delivery **
**This was hilarious when it popped into my head a couple of months ago when I first started this. Its worn off.
Portrait version made as a YouTube short:
A demo of the seahorse rig:
A demo of the puffer fish rig:
3d view of the character animation without camera movement:
And because I hate myself, both fish are textured procedurally 
(I realise you’ll probably not be able to see these properly- just inviting you into my chaotic mind)
All textures in the scene are procedural, and some of the models are too (ish)
To help populate the environment, I made a base version for each of the coral objects and the kelp. Each has a displacement modifier with a bit of global-space noise, so that each duplicate would have a slightly different shape depending on where it was placed (the kelp gets a bit of extra help with some Simple Deform modifiers). I also used the Object Info node plugged into a colour ramp in their shaders so I’d get random colours:
Thanks for watching/reading!
