Simplify the following text for a Grade 6 native English-speaking person.
Original: The Kara Sea is roughly 1,450 kilometres long and 970 kilometres wide with an area of around 880,000 kmÂ and a mean depth of 110 m.
Simplified: It is roughly 1,450 kilometres long and 970 kilometres wide . It has an area of around 880,000 kmÂ and a average depth of 110 m.