Do jellyfish float or swim? ME AND MY SISTER BOYFRIEND were fighting over it. i say yes but he says no.?

Answer 1

Jellyfish drift with the current. Some can "wiggle" to move by pushing water from their bell (the part that looks like a mushroom cap). As they drift, the tentacles dangle below them. Anything that touches the tentacles triggers microscopic venomous barbs to be fired into the object. These barbs release neurotoxins that paralyze muscles (like the heart).

Nosoop4u

Answer 2

Jellyfish Float

Answer 3

Jellyfish swim, they use the water to propell themselves. If they only floated they would not be able to go below the surface.

Answer 4

http://en.wikipedia.org/wiki/Jellyfish
"Jellyfish lack basic sensory organs and a brain, but their nervous systems and rhopalia allow them to perceive stimuli, such as light and odor, and respond fast. They feed on small fish and zooplankton that become caught in their tentacles. Most jellyfish are passive drifters and slow swimmers, as their shape is not hydrodynamic. Instead, they move so as to create a current forcing the prey within reach of their tentacles. They do this by rhythmically opening and closing their bell-like body."
"They have limited control over their movement and mostly free-float, but can use a hydrostatic skeleton that controls the water pouch in their body to actuate vertical movement."
they can organize themselves so they can swim id say "A group of jellyfish is often called a "smack".[citation needed] Many species of jellyfish are also capable of congregating into large swarms or "blooms" consisting of hundreds or even thousands of individuals."

hah and i just read an entire article about jellyfish.. very interesting... while they describe them as 'floating' they kinda contradict themselves by talking about having control over 'vertical movement' and 'congregating into large swarms'.. which is swimming if you ask me

check out the definition of swim
http://dictionary.reference.com/browse/swim

1. to move in water by movements of the limbs, fins, tail, etc.
2. to float on the surface of water or some other liquid.

now look at float's
http://dictionary.reference.com/browse/float
1. to rest or remain on the surface of a liquid; be buoyant: The hollow ball floated.
2. to move gently on the surface of a liquid; drift along: The canoe floated downstream.
3. to rest or move in a liquid, the air, etc.: a balloon floating on high.
4. to move lightly and gracefully: She floated down the stairs.

floating implies very little movement.. swimming implies control over movement (ie congregating into swarms and vertical movement)

jellyfish swim
dead jellyfish float

-case closed-

Answer 5

Jellyfish can swim, that is they're capable of self propulsion. A Portuguese man-o-war just floats around, their only means of propulsion is the sail like fin on top of their floatation bladder.

http://en.wikipedia.org/wiki/Portuguese_Man_o%27_War

Answer 6

Both. Depends on the jellyfish in question.

Answer 7

The float. The current pushes them around and they just go with the flow

Answer 8

They swim and float.

Answer 9

Yes jelly fish swim.

Answer 10

Float they don't have stuffs for swim.