Complex sentence: A later, longer-term study found that the sharks' sporadic position changes covered as much as 75 km (47 mi) over three months, almost circling the island; individuals swam up to 7.3 km (4.5 mi) in a single night.
Split into simpler sentences: A later, longer-term study found that the sharks' sporadic position changes covered as much as 75 km (47 mi) over three months, almost circling the island. Single individuals swam up to 7.3 km (4.5 mi) in a single night.