Baby shark Yoko hatched in early January, flummoxing staff and experts at a US aquarium
Birds do it, bees do it. Even educated fleas do it, according to Cole Porter’s classic song on the universal nature of sex.
But a baby swell shark born in a Louisiana aquarium that houses only females has flummoxed marine experts and raised the possibility that the species may not require such earthly pleasures to produce offspring.
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