Editing Box jellyfish (section)

=== Behavior ===
The box jellyfish actively hunts its prey (small fish), rather than drifting as do [[Scyphozoa|true jellyfish]]. They are strong swimmers, capable of achieving speeds of up to 1.5 to 2 metres per second or about {{convert|4|knots}}.<ref name="National Geographic Online"/> and rapidly turning up to 180° in a few bell contractions.<ref name="Avian2021"/> Some species are capable of avoiding obstacles.<ref name="Avian2021"/>

The majority of box jellyfishes feed by extending their tentacles and accelerating for a short time upwards, then turn upside-down and stop pulsating. Then the jellyfish slowly sinks, until prey finds itself entangled by tentacles. At this point the pedalia fold and bring the prey to the oral opening.<ref name="Avian2021"/>

The venom of cubozoans is distinct from that of scyphozoans, and is used to catch prey (small fish and invertebrates, including [[prawn]]s and [[bait fish]]) and for defence from predators, which include the [[Stromateidae|butterfish]], [[Ephippidae|batfish]], [[rabbitfish]], [[crab]]s ([[Portunus pelagicus|blue swimmer crab]]) and various species of [[turtle]] including the [[hawksbill sea turtle]] and [[flatback sea turtle]]. It seems that sea turtles are unaffected by the stings because they seem to relish box jellyfish.<ref name="National Geographic Online"/>