Then:

From its opening days, Bay Shore Park boasted salt water bathing in the Chesapeake Bay. There was a large bathhouse, where bathers recived a key to a locker which stored their personal effects. 

For the bathers amusement, there were two slides. The Water Toboggan allowed bathers to ride in pairs on a small sled directly into the water. The second slide was further out in the water, smaller than the toboggan, and had water running over it for a smooth ride down the slide. For those who were a little less daring, there was a 'chicken ramp', which stretched the length of the promenade pier. The ramp rose and fell with the tides, and allowed the bathers to enter the water slowly.
The Beach - c. 1920
One of the most popular rides at the park was actually in the water. This ride was called the Sea Swing. Located in the Bay in front of the beach, this ride had swings attached to it. The ride rotated, sending the riders in a wide circle over the Bay, where they could dip their feet in the water while they rode.  The Sea Swing was very popular, but had to ultimately be removed due to rising insurance costs.

At the end of the pier, there was a large platform with a diving board for more experienced swimmers. There was a lifeguard on duty, who watched from a rowboat equipped with all necessary life-saving equipment. 
Now:

Visitors to the park stop on the beach to admire the view of the bay, the Bay Bridge, picnic, sunbathe, and wade. Picnic tables and grills are available on a first-come, first-served basis.

The beach was opened for wading in 1999. It has once again become a popular spot on hot Edgemere summer afternoons.
The beach on a cool, fall day
North Point State Park
 "A little slice of heaven on the Chesapeake Bay"

Water Access