The EMBRYOZ are captured cryptozoological specimens sealed away in various glass prisons and flavours of enchanted essence. Giving the vessel a shake or twirl will provide plentiful sensory delights and reveal the enchantment that enforces the inanimate state of the captured entity.
"An expressionless undersea dweller of unknown origin, this particular Gloomberry is quite as Eldritchian in nature as it's namesake may suggest."
PLEASE NOTE: FOR THE SAKE OF YOUR SAFETY, NEVER ATTEMPT TO RELEASE THE ENTITY FROM CONTAINMENT. THERE WILL BE DIRE CONSEQUENCES
Also serious real life please note: Though much care has been placed into the quality of the jar and how well the liquid within is sealed, the EMBRYO must be handled with care to ensure the structural integrity of the entity's glass prison.