It's a slimy layer that is spreading in turkey. it poses a real threat to marine life. scientists say climate change and pollution have contributed to the spread of this mucus like substance. let's talk about it if you can bear that with professor beran. thank you very much for being with us. what is causing this? explain exactly what it is. good evening. as you said, it's overgrowth... because of uncharted water. , , overgrowth... because of uncharted water. , . ~ overgrowth... because of uncharted water. , ., ,, , overgrowth... because of uncharted water. , .~ , ., overgrowth... because of u...