Amnesia Particle Question

[The Rock Worm]

I've hit a snag in my realistic themed deep sea story. To understand my problem, let me paint the scene...

You're in a 'sub' exploring the Mariana Trench, currently at 6,000 meters down. All of a sudden you're attacked my an unseen giant animal that has a white bio-illuminescent glow!

Now in my story, I plan on using a Water Lurker/Kaernk class monster to be the creature of the Trench. I have thoughts for the rest, and it is easily doable. My main problem is this: Can I have a glow particle for a Kaernk class monster?

If not, then what would you recommend to have for a creature to be seen while swimming in the middle of a deep sea trench?