This popped up on my feed: +EricNieudan has suggested a Monster Manual based on the illustrations of Henry Justice Ford. Looks like a number of bloggers have posted up.
It's a slow Friday at work, so here's an eponymous hazard in local waters for Eric's project.
Armour class: as chain & shield
Hit dice: 4
Move: normal, swim, walk
Attacks: 2 claws (1d8 ea)
No. Appearing: 1
Special: Call Wave (1/day)
edited for format