Complex sentence: In the meantime, Tim moves out of his house and into a local motel, taking with him his pet box jellyfish--decidedly the most venomous creature on earth, with its sting causing death in three to five minutes.
Split into simpler sentences: In the meantime, Tim moves out of his house and into a local motel, taking with him his pet box jellyfish. Decidedly the most venomous creature on earth, its sting causes death in three to five minutes.