African Penguin

A group of African penguins that live on an indoor beach in California greeted some toothy new neighbors this week: six striped pyjama sharks.On Tuesday (July 31), aquarium biologists at the California Academy of Sciences in San Francisco introduced the nocturnal sharks (four females and two males) to their neighbors in nature, as both species live in the wild off the South African coast.The 2-year-old pyjama sharks, which the biologists say are docile and mild-mannered, are expected to spend much of their time in the exhibit's man-made underwater caves ; since the two species rub shoulders in the wild, they should pose no threat to each other."During yesterday's event, the sharks were let into the tank two at a time, which piqued the interest of the penguins," biologists at the California Academy told LiveScience, collectively, in an email. "The penguins reacted with curiosity, some diving into the water to get a closer look at and feel for their new neighbors. Overall, the penguins r...

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