Mom and baby killer whale swim together at SeaWorld San Diego's Shamu Stadium. (Courtesy: Mike Aguilera/SeaWorld San Diego)

(Mike Aguilera/SeaWorld San Diego)

Maternal love blossomed at SeaWorld San Diego this Valentine's Day.

Kasatka, a killer whale who is approximately 37 years old, gave birth Thursday morning under the watchful eyes of SeaWorld's zoological team.

The calf is estimated to weigh between 300 and 350 pounds and measure 6 to 7 feet. The gender of the calf is not yet known.

As with any killer whale birth, the mother and calf will be observed round the clock for the first few days.

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A gorilla feeds it's 4-day-old baby at Safari zoo on Nov. 14, 2012 in Ramat Gan, Israel. Two gorillas were born in as many weeks at the zoo.