I built a 300 meter long sperm whale. I don't really remember why I did this. I'm going to take this shell and turn it into a zombie cyborg space whale. I'm posting this non cyborg-zombie whale shell on here in the hopes that other people will take it and create their own space whales using this as a base. You could also load it with shields, place a big chunk of valuable computers in the center, and have them be rare spawns on your server that players can hunt.
I had to smooth out the model to get it under the 50MB limit on Sketchfab but it still gives a pretty good idea of what this beastie looks like in game. It's fully wedged with heptas, tetras, and a handful of corners.
Star Whale by Starboy on Sketchfab
Here's a screenshot