Complex sentence: Since Gustave has not been captured, his exact length and weight is unknown, but in 2002 it was stated that he could be "easily more than 20 feet (6 meters) long", and weigh more than a ton.
Split into simpler sentences: Since Gustave has not been captured, his exact length and weight is unknown. In 2002 it was stated that he could be "easily more than 20 feet (6 meters) long", and weigh more than a ton.