Jesse SWIM across, Does that sound right? NO! So cancel that word out of the selection and we are left with.. Jesse SWUM across and Jesse SWAM across. I would go with SWUM, because swam sounds more like a present kind of thing, and they are talking about last summer. So He SWUM.
Answer:
Misplaced modifier
Explanation:
Correct
Looking across the ocean, a dolphin jumped out of the water