Jellyfish-a-Day
An Apology

I would like to apologize for the lack of jellyfish yesterday and assure you that there will be jellies at some point this evening.

Your daily moon jellyfish.

Your daily moon jellyfish.

A purple-striped jellyfish.

A purple-striped jellyfish.

An Irukandji jellyfish. The bells of Irukandji jellyfish rarely grow to be larger than 10mm, but their tentacles can be up to a meter long. Unlike other jellyfish, they are able to fire their stingers at will. Their sting causes a condition called Irukandji Syndrome, which, if left untreated, can cause cardiac arrest within 20 minutes.

An Irukandji jellyfish. The bells of Irukandji jellyfish rarely grow to be larger than 10mm, but their tentacles can be up to a meter long. Unlike other jellyfish, they are able to fire their stingers at will. Their sting causes a condition called Irukandji Syndrome, which, if left untreated, can cause cardiac arrest within 20 minutes.

A diagram of the life cycle of scyphozoan jellyfish. Scyphozoan jellyfish are sometimes referred to as “true jellyfish”. #1-#11 are polyps.

A diagram of the life cycle of scyphozoan jellyfish. Scyphozoan jellyfish are sometimes referred to as “true jellyfish”. #1-#11 are polyps.

Although I am somewhat uncertain, I am fairly sure that these are a pair of sea nettles.

Although I am somewhat uncertain, I am fairly sure that these are a pair of sea nettles.

A swarm of golden jellyfish from Jellyfish Lake in Palau. The sting of golden jellyfish is imperceptible to humans.

A swarm of golden jellyfish from Jellyfish Lake in Palau. The sting of golden jellyfish is imperceptible to humans.

A box jellyfish. Box jellyfish are the only animals on earth with constant 360° vision, due to their twenty-four eyes that feed information into four separate brains.

A box jellyfish. Box jellyfish are the only animals on earth with constant 360° vision, due to their twenty-four eyes that feed information into four separate brains.

More moon jellies.

More moon jellies.

Another stuffed jellyfish, this one a knitted rainbow example from yet a different etsy store.

Another stuffed jellyfish, this one a knitted rainbow example from yet a different etsy store.

A crocheted, peach-colored jellyfish from this etsy store.
Quite adorable if I say so myself.

A crocheted, peach-colored jellyfish from this etsy store.

Quite adorable if I say so myself.

Rainbow-tailed jellyfish.

Rainbow-tailed jellyfish.

Antarctic transparent jellyfish.

Antarctic transparent jellyfish.

A lion’s mane jellyfish. The lion’s mane jellyfish, also known as Cyanea capillata, is the largest known species of jellyfish in the world.

A lion’s mane jellyfish. The lion’s mane jellyfish, also known as Cyanea capillata, is the largest known species of jellyfish in the world.

Box jellyfish.

Box jellyfish.