SEA BRIGHT, N.J. (AP) – Authorities protecting a dolphin family in a New Jersey river are stepping up enforcement over the July Fourth holiday, when heavy boat traffic is expected.

Officials say they will fine people who enter an exclusion zone around the dolphins as much as $10,000.

Authorities have decided to keep people away from the 15 bottlenose dolphins after scrapping plans to try coaxing them back out to sea.