Sorrow Jellyfish

The Sorrow Jellyfish is the name commonly used to identify several species of venomous jellyfish that are common in the warm seas of Hislariya.

Please, they've been screaming for the past day, I would have done it myself if we were farther from here.

— the Ferret's Captain

They are medium sized Jellyfish, with a bell between 5 and 10 cm of diameter and tentacles up to 1m long. The tentacles can shoot stingers in their victims when they enter in contact with the skin and the venom ejected can cause a syndrome with permanent sequelae and often fatal outcomes.
The jellyfish possess 10 tentacles arranged around its bell and 4 fleshy oral arms that stem from its center. The tentacles are lined with stingers that contain the neurotoxins and proteins responsible for the symptoms. Only the adult jellyfish contain the venom, the polyps stages can be handled safely and are harvested in some cultures for a bright red pigment used as tattoo ink.

CW:The following section contains a description of the physical and mental effects of severe envenomation. Proceed with caution.

Sorrow syndrome

Go to sleep, you kept watch on them for two days, it's my turn now.

— Sonqui

The sting of these jellyfish causes a combination of symptoms collectively known as Sorrow syndrome.

First stage symptoms

At the moment of contact, the whole body is hit by the effect of something similar to an electric shock. In some cases, this is enough to cause a cardiac arrest or a temporary paralysis and consequent drowning.
In the first stage of the syndrome, the affected area is hit by severe, burning pain and the skin starts to swell and blister with lesions similar to a severe burn. This stage alone lasts for 5-30 minutes.

Second stage symptoms

After this initial period, part of the neurotoxin penetrates the nerve terminations of the affected area causing the constant firing of the pain and sensory synapses until the nerve termination is exhausted.
In addition, some of the neurotoxins can filter in the general system causing generalized panic and hallucinations. This stage is characterized by intense, constant pain in the affected area and can last several days. The combination of the constant pain and the hallucination causes most of the people affected to attempt self harm and the majority of fatalities caused by the jellyfish are due to the consequences of it.

Tarvan

A young pirate whose life has been overturned by a disabling accident at sea. They owe their sanity to the attentive cures of Yarik and Danyia and sworn to repay them by helping in the shop as best as they can.

Lasting sequelae of the envenomation

There's plenty of maimed pirates, Sir. The sea is not a safe way of life, I knew it from the start.

— Tarvan

The survivors of the Sorrow syndrome very rarely get away without severe lasting effects. The skin burns caused by the acidic proteins usually only heal leaving deep scarring in the lesioned part.
In addition to this, the exhaustion the neurotoxin causes to the nerves has long lasting or permanent effects, commonly with complete loss of sensibility and function in the affected area.
More difficult is to define the psychological effects of such a traumatic experience, as they vary case by case, but they are always significant.