The jellyfish is an unusual and fascinating marine animal. Despite its semi-transparent, gelatinous appearance the jellyfish has a painful, venomous sting if you come into contact with one of its tentacles. Take this quiz and learn more about this unique sea creature.
Would you describe the jellyfish as a poisonous or a venomous marine creature?
Where does a venomous creature usually acquire its poison?
from what they eat
produce it themselves
produced during mating season
What is common to different venomous creatures?
lying in wait for prey
means of delivering the venom
immunity to venom of other creatures
Which marine creature has the deadliest venom?
How long does it take for the box jellyfish venom to kill a human?
Just how much venom does this deadly creature have?
What are nematocysts?
the actual stinger
tiny stinging darts
cells of the tentacle
How many nematocysts are there in each tentacle?
What are cnidoblasts?
cells that house nematocysts
The venom of the box jellyfish is described as dermonecrotic. What does that mean?
damages functioning of the brain
kills skin cells and underlying tissue
affects the nervous system
What happens when you try to shake the stingers off?
The tentacles contract and stick tighter.
The tentacles back off but the stingers can rip your skin while retreating.
The stingers detach from the nematocysts and are driven far beneath the surface of your skin.
Is there an effective first aid prior to medical treatment?
carbonated soft drink
cold fresh water
How do some Australians avoid jellyfish stings?
They rub insect repellant on their skin before entering the water.
They wear women's pantyhose when swimming.
They trail ribbons behind them to distract the jellyfish's tentacles.
What is a common method of measuring the toxicity of a substance?
Why are researchers phasing out this method?
to reduce the deaths of test animals
not accurate enough
frequent changes in the chemical compositions of venoms
What other reasons are there for seeking alternatives?
These experiments are expensive and funding is scarce.
The rapid evolution of the different types of venom makes it impossible for research to keep up.
Test animals don't respond the same way as humans.
What is an inland taipan?
venomous cone snail
Just how deadly is it?
It is fatal to humans with no known antidote.
Kills prey in seconds.
Venom from one bite can kill 15,000 mice.
How are venomous creatures benefiting mankind?
Part of the cone shell's venom has been developed into a drug for chronic pain.
Jellyfish venom has been modified to act as a tranquilizer for horses.
Components of the cone snail venom were modified to develop shark repellants.