From publisher blurb:
Of all the unexplored places of this world, none present more challenge to the curiosity of mortals than the murky deep of the sea. Darker than the most remote subterranean vault, more hostile than the driest desert, and more inimical to normal life than the foulest layer of the Abyss; the deepest reaches of any ocean are still a veritable paradise for an avid monster hunter . . .
Blackdyrge
In the latest installment of Blackdyrge's Templates, the enigmatic sage of monsters takes us to one of the most hostile places in the multiverse; the crushing depths of the deep ocean. Swimming through the murky gloom of this watery abyss are the deep spawn, horrific, deep-sea relatives of aquatic monsters and animals. Deep spawn prowl silently through the depths, luring prey close with flashing bioluminescence, and then gulping down the unfortunate creature with a single bite.
Need to liven up your aquatic encounters? Then bring the terror of the deep to your campaign, with Blackdyrge's Templates: Deep Spawn.
Blackdyrge's Templates - Deep Spawn contains 10 pages of new d20 material and includes the following:
An introduction by Blackdyrge
The deep spawn template
Iconic monster #1 - the deep hag, a horrific offshoot of the more common sea hag
Iconic monster #2 - the murk prowler, a whale-sized, deep-sea relative of the sea cat