Skip to main content
Pacific sea nettle Chrysaora fuscescens

  Jellyfish & Ctenaria

Pacific sea nettle

Pacific sea nettle Chrysaora fuscescens

Identity card

Pacific sea nettle

Scientific name:
Chrysaora fuscescens
Year of description:
Brandt, 1835
IUCN Status:
Not Evaluated

It lives in the fresh waters of the North Pacific. It can be found from Siberia and Alaska to Mexico.


The Pacific sea nettle is a pelagic species, which means that it lives in the open water.


The bell of this jellyfish can reach a size of over 30 cm.


Zooplankton and pieces of fish and shrimp.

Pacific sea nettle Chrysaora fuscescens

There are 1,500 stinging cells or cnidocytes on 1 mm of the tentacle of this jellyfish.


The stinging cells are used to paralyse prey. The name of the jellyfish belonging to the Chrysaora genus comes from Chrysaor, the son of Medusa in Greek mythology.

did you know?

Where is the animal to be found?

The Pacific Sea nettle is a pelagic species, which means that it lives in the open water.

How can it be recognised?

This large jellyfish displays golden tones. Jellyfish are cnidarians like anemones and coral.

What is distinctive about it?

It is a carnivore and particularly voracious. Unlike other jellyfish which are microphagous, the brown jellyfish feeds on both zooplankton and pieces of fish and shrimp.

Chrysaora are a source of type II collagen, which is used in particular to relieve arthritis or joint pains.

Jellyfish reproduce sexually: the male and female gametes are produced by separate individuals. After fertilization has occurred between two individuals, small larvae known as planulae are born and deposited on the sea bed, where they become polyps. These polyps give birth to jellyfish through strobilation. This method of reproduction is characterised by vertical separation of parts which form small saucers and turn into jellyfish.

Pacific sea nettle Chrysaora fuscescens

Where can I find it at Nausicaá?

journey on th high seas

Powerful Ocean

The Ocean Mag

Browse through our Ocean Mag

A la une

A treaty on biodiversity in the high seas

Nearly 70 states gathered at the United Nations in New York have already signed the international treaty on the protection of the high seas.

banc de mérous ile de malpelo


What to do on the Opal Coast when it’s raining?

The Opal Coast is a destination reputed for its variety of water sports and nature activities, but what’s there to do in the region when it rains?


Activities and water sports to be enjoyed near Nausicaá

In the Boulogne area, and all along the Opal Coast, water sports are legion.