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Leafy seadragon

life science Maturity 7-9 Next article →

The leafy seadragon is a unique marine fish. It belongs to a group called Syngnathidae. This group includes seahorses and pipefish. The leafy seadragon gets its name from its strange appearance. It has long, leaf-like skin growths all over its body. These parts are not used for swimming. Instead, they provide camouflage to help the fish hide.

Leafy Seadragon JCB
Leafy Seadragon JCB

This camouflage makes them look like floating seaweed. They can even change color to blend in better. This depends on their age, diet, and stress levels.

Moving through the water is a very slow process. The seadragon uses small fins to travel. There are pectoral fins on the sides of its neck. There is also a dorsal fin on its back. These fins are almost completely transparent. They move in tiny, wavy motions to push the fish along.

This slow movement helps maintain the illusion of being a plant. The fish uses its long, pipe-like snout to eat. It sucks up tiny things like plankton and small crustaceans. These include animals called amphipods and mysid shrimp.

Leafy seadragon skeleton 2019 1 8
Leafy seadragon skeleton 2019 1 8

These fish live in specific parts of the ocean. They are found along the southern and western coasts of Australia. Their range goes from Victoria to Western Australia.

Leafy Sea Dragon SA
Leafy Sea Dragon SA

They like to live near kelp-covered rocks or seagrass. Most of them stay over sand patches in the water. They can live in water up to 40 meters deep. While they stay in one area, they can travel several hundred meters. They use a strong sense of direction to find their way back.

Reproduction for these fish is a very special task. The female produces up to 250 bright pink eggs. She uses a long tube called an ovipositor to place them. The eggs attach to a brood patch on the male's tail. The male then cares for the eggs for nine weeks. During this time, the eggs turn purple or orange.

Leafy Seadragon JCB
Leafy Seadragon JCB

When it is time, the male shakes his tail to help them hatch. This process can take 24 to 48 hours. Only about 5% of the eggs actually survive to adulthood.

Because they are slow swimmers, they face many dangers. They can be caught by people for aquariums. Pollution and industrial runoff also hurt their homes. To help them, different parts of Australia have passed laws to protect them. South Australia has protected them since 1987. Western Australia started its protection in 1991. Victoria has protected them since at least 1995. The leafy seadragon is even the official marine emblem of South Australia.

Leafy Sea Dragon SA
Leafy Sea Dragon SA
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🖼️ Images & Media (4)
File:Leafy seadragon skeleton 2019 1 8.jpg
Leafy seadragon skeleton 2019 1 8.jpg
File:Leafy Sea Dragon SA.jpg
Leafy Sea Dragon SA.jpg
Phycodurus eques - Leafy seadragon.webm
File:Leafy Seadragon JCB.jpg
Leafy Seadragon JCB.jpg
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