Jellyfish Season in the Philippines

Be cautious of the Jellyfish season in the Philippines

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Island hopping tours often received phone calls from concerned travelers regarding the Jellyfish Season.

Most local people choose not to swim on our local beaches during the Jellyfish season. All hotels and resorts have a swimming pool so there is no need to worry about where you can cool down.

What are jellyfish? 

Lacking brains, blood, or even hearts, jellyfish are pretty simple critters. They are composed of three layers: an outer layer, called the epidermis; a middle layer made of a thick, elastic, jelly-like substance called mesoglea; and an inner layer, called the gastrodermis.

Not all jellyfish have lethal toxins like box jelly, but proper care is nonetheless important. Growing up in the Philippines, I wasn’t aware of how dangerous jellyfish are. Until  I got stung. I panicked, yes. I feel scared but did you know what family and relatives did? They just called a 4-5-year-old kid and told her to urinate in my leg where I got stung. Ewww!! Yeah, it’s disgusting but amazingly, after a couple of minutes, the discomfort and pain slowly fade away. I don’t recommend that. Why? That’s the old wife’s tale, but it doesn’t work for all jellyfish and it’s very embarrassing. And if you’ve been stung by a Portuguese man O’war it’s the worst thing you can do. It makes the pain ten times worse.

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Be cautious of the Jellyfish season in the Philippines

Now, I’m living here in Australia where there are more dangerous jellyfish around. But hey, I know how what to do if I get stung with jellyfish again. Knock in the wood. I don’t want to experience that again. So anyway, here some common questions about jellyfish season and what to do if you get stung by it..

Will have to admit that it was slightly awkward whenever you felt a jellyfish against your hand or arm? Most jellyfish are harmless however certain varieties may cause a serious reaction. Incidents involving serious marine stings are becoming more common during the Jellyfish Season. It is important to follow the below precautions to avoid being stung. Because some jellyfish have a sting powerful enough to kill fish and occasionally even humans.

Precautions to Avoid during Jellyfish Season

 When is jellyfish season in the Philippines?

Usually, April and May, when the Habagat ends. However, our recent climate patterns mean many such generalizations don’t apply as well

How many species of jellyfish do we have in the Philippines? What are the most common ones?

The most common ones are Aurelia or moon jelly and relatives of the genus Mastigias Papua.

The particular species Aurelia aurita is often called “moon jelly,” after its milky, translucent color and shape. Moon Jellyfish stings and that hurts. Moon jellyfish stings are not fatal to humans. Infarct, their mild venom is not enough to seriously injure a full-grown human being.

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jellyfish season - aurelia aurita
The Moon Jelly or Aurelia Aurita jelly is not a strong swimmer, mainly using its short tentacles to stay near the water surface.
Aurelia Aurita jellyfish season
You can easily spot moon jelly by seeing their purple or pink flower-shape with four “petals” that can be seen in their center of their sac-like body.
Jellyfish season -Mastigias papua
Are there coasts in the Philippines where stinging jellies are more common?

The first recorded human deaths in the medical literature are in Suall Pangasinan. But jellyfishes are found virtually anywhere. In fact, Aurelia is referred to as “cosmopolitan” in distribution, meaning it is found worldwide, even in cold places like Norway. This is the same jellyfish that caused a Luzon-wide blackout on December 10, 1999. 

Investigations revealed that the Luzon-wide outage was caused by jellyfish. More than 50 truckloads of jellyfish swam near and were sucked into the Sual Power Plant’s cooling system, forcing them to shut down. The power imbalance in the Luzon grid prompted a series of shutdowns that eventually affected the entire Luzon.

Be cautious of the Jellyfish season in the Philippines
Be cautious of the Jellyfish season in the Philippines
A photo of the jellyfish bloom in Palawan taken on April 1, 2020

Giant blooms of pink jellyfish have been reported in Palawan, Philippines, as beaches are left deserted during the coronavirus pandemic. It might just be with the situation in the Philippines, that the current bloom is more noticeable because the tourists aren’t there to disturb the jellies and so they are rising all the way to the surface of the water and in the presence of tourists they may stay closer to the bottom of the sea, or move further offshore.

These activities can possibly alter water circulation and distribution of zooplankton food for the jellyfish, thereby potentially changing the distribution of jellyfish medusae.”

The absence of field data and formal scientific reports on the behavior and distribution of the jellyfish species makes it difficult to even speculate about whether the presence of tourists and fishers on the area affect the jellyfish.

How do jellyfish end up on the beach?

Jellyfish go with the flow. They float with the current, which means that if the current comes to shore, jellyfish may come too. Stormy weather and strong winds can also bring jellyfish to shore, and they can end up on the beach. Because they contain so much water, Jellyfish die quite fast after they wash up on a beach.

How does a jellyfish sting?

Jellyfish don’t generally intend to sting humans. They mostly use their stinging tentacles to catch and eat their dinner. Still, jellyfish do sting people from time to time, usually by brushing against swimmers, surfers, or other water recreation enthusiasts. It’s also possible to be stung by a dead jellyfish that has washed up on the shore, so always watch your step on the beach.

Jellyfish stings are painful, but in most cases, they are mild and are not too serious.
Normally, they will cause red marks, tingling, itching, or numbness. Jellyfish stings cause more harm in people with weak immune systems, elderly people, and children.

Only some jellyfish stings, such as those from Box Jellyfish (the most deadly), Lion’s Mane Jellyfish, and Sea Nettle, can be very serious. The more dangerous jellyfish species live in Australia, the Philippines, the Indian Ocean, and the central Pacific Ocean. Portuguese Man-of-War is not technically jellyfish. They are actually colonial organisms made up of polyps. Nevertheless, they can deliver painful stings.

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jellyfish-sting
Although serious allergic reactions or anaphylaxis after a jellyfish sting are uncommon, they are cause to see a doctor

What can you do if you get stung by a jellyfish?

You may have heard the myth that applying urine to a jellyfish sting is able to counteract the venom, but there is no scientific basis for this “remedy” and it can sometimes actually make the sting hurt more, or make the venom more powerful. Here’s what to do if you’re stung by a jellyfish:

1. Rinse the sting with seawater or create a paste of baking soda and seawater to get rid of the tentacles. If you’re able to, bathe the area in heated tap water or take a warm shower.

2. Remove any leftover tentacles with a dry towel. If the tentacles are difficult to remove, try coating them with shaving cream, then shaving them off with a razor or credit card. Protect your hands with gloves if possible.

3. Protect the site of the sting. Avoid pressure and contact with sand.

4. Taking pain relievers like ibuprofen or applying antihistamines or steroid creams (like cortisone) can lessen the pain, itching, and swelling. In Australia, most lifeguard teams are equipped with morphine and antivenoms to treat the nastier stings from down under.

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In the Philippines, some researchers discovered that vinegar may cause more harm than good in cases of box jellyfish stings, but it’s still the recommended general first aid for jelly stings in the US and Australia.


A weak acid like vinegar is good because it neutralizes the stinging cells that can drift around or stay on the skin and still cause trouble. Ammonia, freshwater, and urine are not advisable. One must observe a victim closely, though, because some reactions may be delayed.

Only a small number of jellyfish will actually end up coming into contact with swimmers, and many of them do not give serious stings.

They’re definitely no reason to fear the water! There are even a number of jellyfish that sting very mildly or do not sting at all, such as Pleurobrachia Bachei (more commonly known as sea gooseberries), or Aurelia Aurita (also called the moon jelly).

In fact, swimming with jellyfish is a popular tourist activity in some places. In the famous Lake Palau in the Philippines, you can swim with Golden jellyfish and Moon jellyfish. Be cautious during jellyfish season but hey, swimming with jellyfish just may give you a new perspective on these beautiful and fascinating creatures.

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