Family fun in the sun!

Jennifer Garner and Ben Affleck spent Easter weekend exploring Oahu, Hawaii with their three children Violet, 12, Seraphina, 9, and Samuel, 6. On Saturday, the whole family visited Sea Life Park.

“They made a family trip to interact with dolphins, sea lions and stingrays,” a source tells PEOPLE. “They spent several hours at the park and looked like they had the best time. The kids were all very interested in learning about the animals. They all seem like huge dolphin fans.”

During the trip, Garner, 45, is staying at a resort while Affleck is staying at a nearby house. While the couple’s three kids are spending time with their father, the actress is enjoying herself with a female friend.

Affleck has been training for his new film Triple Frontier in Hawaii in recent weeks, and has been joined by his…