Simplify the following text for a Grade 8 native English-speaking person.
Original: Archipelagos are usually found in the open sea ; less commonly , a big land mass may neighbor them , an example being Scotland which has more than 700 islands surrounding the mainland .
Simplified: Archipelagos can be found isolated in bodies of water ; or a large land mass may neighbor them . For example , Scotland has more than 700 islands surrounding its mainland .