Box jellyfish are often feared as dangerous animals, with some species capable of causing severe or even fatal stings. However, box jellyfish nematocysts—organelles responsible for this toxic ...

Sperm transfer in Copula sivickisi. The male (above) produces and transfers a spermatophore while grasping the female by the tentacles; the female (below) receives the spermatophore. Box jellyfish are ...

Scary, squishy, cool, brainless, mesmerizing—jellyfish are all of these and a whole lot more. Anatomically they’re relatively ...

Ding! The courier hands me an unassuming brown box with "live animals" plastered on the side. I begin carefully unboxing. The cardboard exterior gives way to a white polystyrene clamshell, cloistering ...