The Whalius Dobalius or the space whales as they are known, are a race of creatures found only in he Jasaro system.
Just an idea for now. The name will probably change.
The 'space whales' are found near Simia and also on other sides of the Jasaro system. They come from portals and they feast on floating debris, which is why they increased when the Jashari humans released a rubbish tip into space. They are also known for feasting on planets, which is why they are feared.