Written By: Eliza Berman

As summer fizzles to an end and children trade beach balls for backpacks, beachgoers pay their final visits to the shore. But the beach today doesn’t look quite like it did in 1948 and not just because sea levels are rising.

When LIFE chronicled how Americans were enjoying their beaches in the late 1940s, its photographers found revelers from Cape Cod to California engaging in activities not often seen today. They were belly-sliding, trampoline flipping, tossing one another in the air on blankets and shooting grape juice from water guns.

Still, if one thing has remained constant over the years, it’s captured in LIFE’s homage to the freedom of the seaside. As the editors wrote:

But perhaps its greatest appeal lies in the fact that people on a beach can feel just about as free and equal as they were created. Poor clothes and poor surroundings are forgotten. Anyone with the price of a bathing suit can suddenly become a sandy, sunburned monarch in a kingdom of salt spray, hot dogs and growling surf.

Liz Ronk, who edited this gallery, is the Photo Editor for LIFE.com. Follow her on Twitter @lizabethronk.

he perils of blanket tossing are happily undergone by pretty Miss Norma Baker with the help of eight husky friends at Hermosa Beach in California.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Hermosa Beach, California, 1948.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Hermosa Beach, California, 1948.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Santa Monica Beach, California, 1948.

1948 Santa Monica Beach California

Loomis Dean The LIFE Picture Collection/Shutterstock

Daring young man flies off trampolin at California's Santa Monica Beach, where movie starlets show off.

1948 Santa Monica Beach California

Loomis Dean The LIFE Picture Collection/Shutterstock

Pretty girl gets fast and foamy surf ride on inflated mattress cover at Hermosa Beach.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Santa Monica Beach, California, 1948.

1948 Santa Monica Beach California

Loomis Dean The LIFE Picture Collection/Shutterstock

Couple playing cards at Santa Monica Beach, California, 1948.

1948 Santa Monica Beach California

Loomis Dean The LIFE Picture Collection/Shutterstock

Hermosa Beach, California, 1948.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Hermosa Beach, California, 1948.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Hermosa Beach, California, 1948.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Hermosa Beach, California, 1948.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Belly-sliding, a perilous but pleasant sport, is demonstrated by an expert at California's Hermosa Beach.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Hermosa Beach, California, 1948.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

Hermosa Beach, California, 1948.

1948 Hermosa Beach California

John Florea The LIFE Picture Collection/Shutterstock

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