So here it is, the mythical dragonbatshark I've been going on about to some of you. I didn't want to post each image separately because they were such low quality, and so that you can easily switch back and forth between images to compare anatomy.
As I've yet to come up with a name, I'll just refer to it as the DBS.

The DBS is an extremely large coastal animal (height: 160 m, weight: approx. 40 tonnes) that only really uses its size to defend the bluff caves it makes its home in, fish, and to make attacks on the surrounding countryside. In regards to the fishing, DBS have been sighted carrying fish back to their caves in the extremes of both size and bizarreness. There is no set size to a DBS, as they don't have a genetic marker in place to tell them to stop growing. Just-born DBS are approximately the size of a transport truck, in both height and length.

DBS have three main physical oddities:
1) across their chest area, they have odd fleshy bumps, almost like a really shaggy carpet. The apparent purpose of these is to quickly dissolve the large deposits of salt that crystallize on their cave interiors, convert it into some form of chemical compound, and send it to an organ that appears to distribute it throughout the entire system. It is unknown if these bumps are part of the DBS, or if they're some form of plant or animal parasite that works together and for the DBS.
2) DBS ribcages are hinged down their sides; although when attempting press them inward they're very sturdy, they can flex out almost 200 degrees from their original positions. Note: they have a triangular piece of bone that acts similarly to a knee-cap. This cap adds additional stability when pressed in, but is lose. This hinging system, along with the DBS's double hinged unhinging jaw, allows the DBS to swallow things on a much larger ratio than snakes can (notably for fish).
3) DBS have long elastic organs that come through their horns. When clinging to surfaces of their caves, these organs extend and open into a form of filter that gathers nutrients and water from the air, to aid in the conversion of salt. This, combined with the DBS's center eye (the 4 along the sides are used for sensing light and heat), means the DBS can cling in a hibernative state for months, sometimes years for older DBS.

Comments on this piece are appreciated.