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Europan Scylla
The Europan Scylla (Selí̱ni̱garída Scylla, from Greek Selí̱ni̱ (moon) and garída (shrimp)), sometimes called the Cobalt or Shark Shrimp, is a species of armored fish that inhabits Jupiter's moon Europa. It is the only known member of the genus Selí̱ni̱garída. It is known from only a few specimens, with average sizes of 7 m (24 ft) long and weighing possibly up to 3,400 kg (7,496 lb), based on analysis of similar species of size and lifestyle. This species reaches its maturity around 15 years of age and was previously believed to have a life span of over 30 years. The true lifespan of Europan Scyllas are far longer, with the oldest found specimen to be over 80 earth years, making it one of the longest lived species on Europa currently known. Male Europan Scyllas take 24 years to reach sexual maturity, while the females take 26 years to be ready to produce offspring. Europan Scyllas can accelerate to over 73 km/h (45 mph).

Anatomy and appearance
The Europan Scylla is a newly discovered species of fish that has characteristics of both crustaceans and fish. They possess a hard exoskeleton that covers most of the body excluding the face. Like most arthropods on Earth, Europan Scyllas must moult in order to grow, which leaves them vulnerable. During the moulting process, their exoskeleton changes color to show age. Europan Scyllas possess 10 walking legs, the first of which are larger than the others. The spacing and size of each leg are symmetrical. The Europan Scylla has a distinctively long and blade-like snout, ending in a sharp point on its exoskeleton. The length of the snout grows proportionally with the body as it moults. The eyes are small and have nictitating membranes. It seems to be able to see quite clearly when in lower depths when observed. The large mouth is parabolic in shape. It has 32 upper and 20 lower tooth rows. The teeth in the main part of the jaws are long and narrow, particularly those near the symphysis (jaw midpoint). The teeth are translucent, possibly to make it easier to see the bioluminescent tongue.

Size
Europan Scyllas reach maturity at 3.5–4.5 m (11.5–14.9 ft). Adults on average are 7 m (24 ft) long and possibly weight up to 3,400kg (7,496 lb). Females are generally larger than males. The maximum size the Europan Scylla can reach is subject to debate, seeing as it grows depending on how much food it consumes. It is not known if there is a limit to how large it can grow. The largest observed Europan Scylla is a male that roams in the Northern parts of Europa. It reaches 14.21m (118.4 ft), which also makes it the largest individual on Europa. It is over 80 years old and still seems to be sexually mature.

Diet
Europan Scyllas are carnivorous and prey upon anything they are able to eat. Europan Scyllas predominantly prey on fish with soft scales as their jaws are not strong enough to withstand the forces required to attack larger prey with shells until they reach a length of 3 metres (9.8 ft) or more, at which point their jaw becomes strong enough to withstand the force of biting into shells. Upon approaching a length of nearly 4 metres (13 ft), they begin to target prey that are larger than they are, though individual ones seem to specialize in different types of prey depending on where they are located. They seem to be highly opportunistic and will hunt most things they can find. Some have been found to eat until their stomachs burst, which in turn kills them.

Reproduction
Almost nothing is known about the reproduction of Europan Scyllas. Europan Scyllas were previously thought to reach sexual maturity at around 18 years of age, but actually take far longer; male great white sharks reach sexual maturity at age 24, while females take 26 years to reach sexual maturity. Europan Scylla's maximum life span was originally believed to be more than 30 years, but after discovering the oldest Europan Scylla, it is believed they can live up to 80 years and over.

Little is known about the Europan Scylla's behavior in the way of mating habits. Egg-laying has never been observed, but pregnant females have been observed. Europan Scyllas are oviparous, which means eggs are fertilized internally and are released into the water. Eggs have been found before, but are usually eaten due to it being easy prey. Out of a clutch of 400 eggs, less than a dozen survive, ensuring the fastest and strongest babies survive.

Threats
Europan Scylla's are hunted by most creatures in Europa. Many creatures are opportunists and will eat anything smaller than they are. Other larger Europan Scylla are not exception to this, as they will eat their own kind if given the chance.

Taxonomy
In January 2016 professor Guillema and his team of scientists worked on a small camera droid to send the Jupiters moon eruopa. By the end of December 2016 the team finally finished and where ready to send it of. By September 2018 the drone finally got the moon and begun drilling the ice until it hit the water. Sadly the small drown was destroyed by something but before it was destroyed the drown took one photo that made the scientists speechless it was a photo of well they explained it as a "giant shrimp monster". So they began on working on a stronger more powerful drone that could with stand any condition for proximately 9 months by the time Drone#2 was was finished it was the year 2020 December on the first of January 2021 it was sent off and did not land until October  2022. Drone#2 was in eruopa for six months but the scientists new it wouldn't last so they began making loads of them and sending them to the moon at one stage they had nine in there. After all this study of all these unique species but professor Guillema wasn't happy he was still wanted to fined that shrimp creature that ate the original drone until November 20th 2023 profecer Guillema and head scientists Dr. Z .Blaje