From June through August, you may see swarms of small freshwater jellyfish swimming in Lake Ouachita.
These bell-shaped hydrozoa (craspedacusta sowerbyii) are translucent
with a white or green tint and are about the size of a quarter when fully grown.
They are umbrella shaped and have a whorl of string-like tentacles around their circular edge (ring canal).
They are umbrella shaped and have a whorl of string-like tentacles around their circular edge (ring canal).
The tentacles contain hundreds of special cells called cnidocytes.
The cnidocytes contain the nematocysts that are used to capture prey.
The jellyfish are usually somewhat translucent with a whitish or greenish
tinge.
Often, large flat sex organs called gonads hang from the underside of the
jellyfish.
These organs make the jellyfish easier to spot because they are not translucent.
Like true jellyfish, they do have stinging cells (cnidocytes). This mechanism is designed for feeding, as the cnidocytes are utilized to paralyze macroinvertebrates and even small fish.
There is no "hard" evidence that these organisms can penetrate human skin (though some have claimed otherwise).
August and September are peak months for jellyfish sightings when Lake Ouachita water is warm and food is abundant.
The jellyfish will be floating or swimming gently just below the surface of the water. They are easily seen by the naked eye.
They often surface in large numbers called "blooms". Sunny days are especially good for spotting jellyfish.
These organs make the jellyfish easier to spot because they are not translucent.
Like true jellyfish, they do have stinging cells (cnidocytes). This mechanism is designed for feeding, as the cnidocytes are utilized to paralyze macroinvertebrates and even small fish.
There is no "hard" evidence that these organisms can penetrate human skin (though some have claimed otherwise).
August and September are peak months for jellyfish sightings when Lake Ouachita water is warm and food is abundant.
The jellyfish will be floating or swimming gently just below the surface of the water. They are easily seen by the naked eye.
They often surface in large numbers called "blooms". Sunny days are especially good for spotting jellyfish.
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