Hard pink blobs on the beach are often Sea Pork (colonial tunicates, rubbery filter feeders) or sometimes Pink Meanies (large jellyfish), while other possibilities include Coralline Algae (hard, calcified algae) or sea snail egg sacs, depending on texture and location. Sea pork forms colonies that look like gelatinous masses, Pink Meanies are large, softer jellyfish, and coralline algae creates hard, pink crusts.
The strange clear blobs may resemble jellyfish, but salps are actually a kind of gelatinous zooplankton that can grow several inches long. Here's what you need to know about salps, why they're here and if they're dangerous for you or your family.
The clear gelatinous blobs are called salps. These marine animals resemble the top of a jellyfish and have the same characteristics minus the tentacles. Like jellyfish, they basically just drift around the ocean which is why they wash ashore. These simple creatures are actually classified as chordates.
The clear jelly you find on Australian beaches isn't jellyfish, but usually the harmless, crescent-shaped egg sacs of predatory moon snails (Naticidae), also called "jelly sausages" or "sausage blubber," filled with thousands of tiny eggs in a jelly matrix. Sometimes, you might also find blue or clear salps (gelatinous zooplankton) or squid eggs, but the most common culprits are the moon snail egg masses that swell and wash ashore.
The name is a misnomer, because pink algae is not a true algae but is actually caused by a bacterium in the genus Methylobacterium. The color of the bacterial growth comes from pigments within its cells. The slime formed around the bacteria provides it with a relatively high level of protection from external threats.
Spotting the pink slime around the house doesn't mean you and your family are in danger. Touching the pink mold is mostly harmless to healthy people, but it can cause urinary tract infections, and you don't want it to enter an open wound, where it can also lead to infection.
If you come in contact with such bioluminescent algae, they can be harmful to you too. Some species, like the sea sparkle, are not very poisonous but can still have unpleasant side effects. Evidence also suggests that bioluminescence can be a sign of changes in the environment, including pollution and global warming.
V. velella's nematocysts are relatively benign to humans, although each person may respond differently to contact with the nematocyst toxin. It is wise to avoid touching one's face or eyes after handling V. velella, and itching may develop on parts of the skin that have been exposed to V.
Are Jelly Blubbers dangerous? No, their stings are mild and usually only cause minor skin irritation.
They take relatively thin-shelled clams up to 5 cm in length and can eat one every four days in the laboratory. They also eat other snails and, in some circumstances, herring eggs.
And unlike some jellyfish, salps do not sting and are harmless to touch. Salps are a type of tunicate, a group of marine invertebrates that include sea squirts, according to the Smithsonian Museum of Natural History.
Bryozoans are a food source to fish, insects and snails. They also clean the water as they consume microorganisms, which typically results in good water quality. Due to their positive impact on ponds, removal is unnecessary.
Jellyfish are most active during warmer months, generally from late spring to early fall (around May to October/November) in many regions, especially in tropical areas like Northern Australia where the "stinger season" runs from November to May, but some types, like Lion's Mane, peak in late fall/winter (November-March). Their activity coincides with warmer waters and seasonal migrations, though presence varies greatly by location, species, currents, and rainfall.
Myxarium nucleatum, a clear, gelatinous fungus that grows on decaying wood. Observations made of star jelly in Scotland support the theory that one origin of star jelly is spawn jelly from frogs or toads, which has been vomited up by amphibian-eating creatures.
These large jelly blobs in freshwater are native to North America, and they typically grow on docks and other submerged wood. There are several ways that bryozoans can reproduce. Zooids can multiply themselves by budding, and they also grow eggs and sperm to reproduce.
Salps are a type of gelatinous zooplankton. That means that (like jellyfish) they don't have hard parts. Their bodies are mostly water.
Sea turtles and other jelly-eating animals, such as tuna, sunfish, butterfish and spiny dogfish, keep jelly populations in balance. All seven species of sea turtles include them in their diets.
As soon as the jellyfish is dropped on the beach by the retreating tide, the jellyfish begins to die. A jellyfish breathes by taking in oxygen from the seawater through its skin so as soon as it is on dry land it can no longer live.
This is because jellyfish are about 95 percent water. Lacking brains, blood, or even hearts, jellyfish are pretty simple critters.
They wash up on shore due to a combination of shoreward wind and current patterns. Velellas float on the surface of the ocean, have no means of locomotion, and are moved across the water by ocean currents and the wind that catches their “sails.”
Covering skin with tight clothing and covering exposed areas (such as lips and face) with petroleum jelly will prevent many stings. Swim early or late in the season. Sea nettles are only present in the Bay during the summer (~ May to September) when water temperatures are between 78 to 86o F.
Look but don't touch - they give a very nasty sting, even long after they are dead. The Wildlife Trusts are working with sea users, scientists, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives.
Bioluminescent algae can have severe effects on human health and should not be touched. Do not swim in waters containing algal blooms, no matter how beautiful they are. Direct contact could lead to skin infections or even death. Dogs should be kept away from this toxic algae, too.
The most common glowy things found here in Jervis Bay are microscopic bioluminescent algae known as Noctiluca. They are so small that thousands of them can fit in a single drop of water.
Swimming in an algae bloom (especially blue-green algae) can cause skin rashes, eye/nose irritation, and respiratory issues from contact, while swallowing the water can lead to vomiting, diarrhea, fever, headaches, and potentially liver/nervous system damage, as harmful toxins are released; it's best to avoid water that looks discolored, slimy, or scummy. Always rinse off with clean water and seek medical attention if symptoms appear after exposure.