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Jellyfish, the Sea Elves

Duration: 1 June – 15 September, 2017

Venue: West Travelling Exhibition Hall, 2nd Floor

Created by: Qingdao Haise Popular Culture Co., Ltd (China)

Cost: Free of Charge (Included in the admission fee)

 

In the vast seas live the jellyfishes, a species of graceful and beautiful elves. They can date back to over 600 million years ago, even more ancient than dinosaurs. They have been widely spread in the seas all over the world. Along with the continuous discovery and exploration of the seas, jellyfishes are getting closer and closer to human lives.

Are you curious about the gender of the jellyfishes? How do jellyfishes reproduce? GDSC has presented a four-month themed exhibition: Jellyfish, the Sea Elves since June 1, 2017. As the first exhibition of living marine creatures ever presented in GDSC, it will inspire the visitors to probe into the magical jellyfish world, enjoy an aesthetic visual feast and discover more science mysteries of jellyfishes.

More than 10 species of graceful living jellyfishes and marine creatures are on display, vividly showing the mysteries of jellyfishes and the marine habitat. The visitors can closely observe, enjoy and learn about the jellyfishes here.

http://www.gdsc.cn/dtzx/zxdt/201706/W020170602405799837356.jpg

 

Knowledge on Jellyfishes

In the bodies of jellyfishes, over 95% is water. So they feel as delicate as silk and look transparent, being called as a species of fantastic creatures.

The jellyfishes stay at the low reach of invertebrate zooplanktons and are classified into Phylum Cnidaria (Coelenterate) of Class Scyphozoa in the taxonomy.

Jellyfish is just an umbrella name for over 250 species of siblings. Broadly, jellyfish also refers to jellyfish-shaped (bell-shaped or saucer-shaped) cnidarians, such as Hydromedusa, and Siphonophore (including the Physalia Physalis) as well as Ctenophore and Thaliacea that do not actually belong to Class Scyphozoa.

Jellyfishes appeared on the Earth even earlier than dinosaurs, about 650 million years ago. With just a simple set of gastrovascular cavity and a set of diffuse neuroendocrine system, why can they survive such a long history? The study found that when certain species of jellyfishes are dying as a result of sudden injuries, they can release several times more sperms or eggs than usual. When sperms and eggs become fertilized eggs, new jellyfishes will be born to guarantee the continuation of their species. At the same time, some other species of jellyfishes can survive a certain low temperature only with their biological activity being reduced. These become one of the reasons that jellyfishes can continue to reproduce.

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