Seven Caves at La Jolla, California

Postcard US-3934052 to France shows the Seven Caves of La Jolla, near San Diego, California. Nestled between La Jolla Cove and La Jolla Shores, only one of caves is accessible by land while the other six can only be accessed by guided kayaking. Housed in a seventy-five million year old sea cliff, each of them has a unique name: White Lady, Little Sister, Shopping Cart, Sea Surprize, Arch Cave, Sunny Jim’s Cave, and Clam’s Cave.

Sunny Jim’s Cave, named after a cartoon character from a brand of cereal that was common at the turn of the century because of the similarity of the shape of their mouths, is the only known land accessed cave along the California coastline. In history, the cave's tunnel, leading to Coast Boulevard in La Jolla, was carved out by Chinese immigrant laborers for smuggling Chinese and other immigrants into the United States. Those intriguing caves were also once used to smuggle illegal whisky during the prohibition from 1920 to 1933.

SeaWorld to End Orca Breeding Program

SeaWorld announced on March 17, 2016 that the company will end all orca (killer whale) breeding now. It will also introduce new, inspiring, natural orca encounters, rather than theatrical shows, with focus on orca enrichment, exercise, and overall health. Those change will start in its San Diego park in 2017, followed by San Antonio and then Orlando locations in 2019.

The postcard, purchased at a local stamp show, shows Orky and Corky, the only pair of mature breeding Orcas at Hanna-Barbera's Marineland in Rancho Palos Verdes, California. They were receiving a fraction of the some 450 pounds of fish as their daily consumption. Marineland, first opened in 1954, was purchased by the owners of SeaWorld San Diego in 1987. The new owners moved these popular killer whales and other animals to their San Diego facility and abruptly closed Marineland.

The current changes come as a result of the pressure from animal rights groups in protesting SeaWorld for its treatment of the killer whales and other sea mammals in captive. Now, Seaworld will have to ponder its own fate: how to survive without orca shows?

America's Cup

Outgoing postcard US-3280219 to Germany was a stamped card honoring the America's Cup yacht races issued by USPS at San Diego on May 6, 1992. It was sold for 50 cents, with 19 cents toward postage.

The front of the card features a full-color reproduction of the Ranger, winner of the 1937 America's Cup, as Ken Boyd, spokesman for the postal service, described to Los Angeles Times. "Wind-filled ocher sails, the bright white dress of the crew and a complementary green ocean and blue sky fill the card, which is trimmed in white."

A 1-inch by 2-inch drawing of the Reliance, the 1903 winner of the America's Cup,  appears in the upper right stamp area on the back of the card.