Inside Europe’s largest jellyfish farm


Pacific compass jellyfish (Chrysaora fuscescens) inside a plastic bag. The cultured jellyfish, along with a portion of the water in which they grew, are shipped in plastic bags (and insulating Styrofoam boxes) to various customers, including zoos, aquariums, and research institutions. Jellyfish Farm, Europe's largest jellyfish breeding facility, K??nzell, Germany.

Pacific compass jellyfish (Chrysaora fuscescens)

Heidi & Hans-Jürgen Koch

These eerily beautiful images show animals born at Europe’s largest jelly-fish breeding facility: Jellyfish Farm, in Künzell, Germany – hundreds of kilometres from any ocean.

Photographers Heidi and Hans-Jürgen Koch used macro lenses and studio flashes to capture the images, but they were most concerned with the positioning of the jellyfish, which sink to the bottom of a normal aquarium and thus wouldn’t be photographable. The animals needed a “jellyfish kreisel“, or gyroscope, to create water movement, without which they can’t swim or feed.

Jellyfish gyroscope with moon jellyfish (Aurelia aurita). Mediterranean temperature range of 18-20?C. In these specially constructed aquariums, a constant current is created, which is necessary for the jellyfish's survival. Without water movement that simulates ocean currents, the animals would be unable to swim and thus feed. Jellyfish Farm, Europe's largest jellyfish breeding facility, K?nzell, Germany.

Moon jellyfish (Aurelia aurita)

Heidi & Hans-Jürgen Koch

Jellyfish drift “between being an environmental threat and a source of sustainable innovation”, say the Kochs as part of their project. The number of blooms is increasing as oceans heat up and pollution and overfishing increase, with dire consequences for ecosystems and economies.

Young mangrove jellyfish (Cassiopea xamachana) in a pipette. As adults, they will primarily reside in shallow water on the seafloor, with their undersides turned upward so that their tentacles point toward sunlight. This behavior is due to their symbiosis with a single-celled algae that lives in their tentacles and conducts photosynthesis there. Jellyfish Farm, Europe's largest jellyfish farm, K?nzell, Germany.

Mangrove jellyfish (Cassiopea xamachana)

Heidi & Hans-Jürgen Koch

But jellyfish also present great opportunities: as animal feed, fertilisers or human superfoods, thanks to the anti-inflammatory and immunologically important biochemicals they contain. Their mucus can also create a biofilter to stop plastics from reaching the sea.

Pacific compass jellyfish (Chrysaora fuscescens) are shown in the main picture. They will be shipped to zoos, aquariums and research institutions. Below this, a gyroscope provides an ocean-like vortex for moon jellyfish (Aurelia aurita). Pictured above, a pipette contains mangrove jellyfish (Cassiopea xamachana).

A Jellyfish Farm employee checks jellyfish taken from the tanks, which are then packed in plastic bags for transport to customers. Jellyfish Farm, Europe's largest jellyfish farm, K?nzell, Germany.

Heidi & Hans-Jürgen Koch

As adults, they will live on the seafloor, their tentacles pointing to sunlight, helping single-celled algae there conduct photosynthesis. The image above shows jellyfish specimens being checked before dispatch.

 

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