is the starting point for scientific expeditions all around the world. he goes gale mar helmholtz center for ocean research is well known among researchers. ya spurs was previously at the institute for aquatic resources at the technical university of denmark. in 2006 marine biologists discovered the imported cone jelly species in the baltic. that was a shock. in the mediterranean the population had exploded and also caused huge damage to the black c.z. ecosystem. how quickly can the warty come jelly conquer its new habitat. is it a threat to the baltic to at 1st glance their fascinatingly beautiful. the a comb jellies shimmer and all the colors of the rainbow. under the microscope it becomes
a dish and the jellyfish doesn t show up during the main caught spawning season in the light side of this process. so no reason for concern. for nearly youngsters disagrees. because the water column jellies came to europe into migration waves. the ones that appeared for the 1st time down here in the black sea a rich night and from the gulf of mexico he often goes from mexico well him being the animals we have up here in the baltic they ve come from boston woods home that area. boston that s been proved genetically and means that these were 2 completely distinct invasions. so what would happen if the warty come jellies from the black sea were introduced into the baltic killa come here they are found in large numbers in the southwest and baltic and in the kattegat between
caught eggs larvae for food. the jellyfish doesn t eat the fish eggs they spit them out again. the opposite happens to the very young cod babies. the comb jelly laps them up. many of us cannot take any to fish lava but mostly just those that is still in the yolk sent up they don t actively swim yet the others are to mobile get away from the jellyfish arms into the vehicle and continue up to snuff and of course. this means the warty come jelly s could be dangerous. on board the danish research vessel donna biologist boston pewter conducts a jellyfish census 4 times a year. are they posing a threat to the eggs and larvae of herring and cod. and it was bones get bitten
cone jelly species in the baltic. that was a shock. in the mediterranean the population had exploded and also caused huge damage to the black c.c. ecosystem. how quickly can the warty come jelly conquer its new habitat. is it a threat to the baltic to at 1st glance their fascinatingly beautiful. the a comb jellies shimmer and all the colors of the rainbow. under the microscope it becomes clear why. light refracts and all the spectral colors of the tiny transparent discs with which the animal moves around. but yeah spurs has made a frightening discovery. the migrants can cope so well with local conditions that it s not just the adults that are reproducing but the young ones as well. under
ideal conditions and the lack of freshly hatched larva begins langue eggs and only a few days. just 1st team spent months counting and observing to find out just how many eggs such larvae can produce. the oscars has shown that the ability of the warty come jelly to reproduce rapidly wherever it likes the conditions is largely linked to the species particular reproductive qualities. as i this isn t a native species it doesn t belong here so it s important that we keep an eye on it so we know how it s developing and whether it s taking of the ecosystem. that would be disastrous. the baltic is home to fish such as cod and herring which are important for the fish market. are the warty come jellies eating their young. cornelia ya spruce performs an experiment to find out. she gives the jelly fish