Underwater cinematographer and documentary producer Tahsin Ceylan, AA personnel and invitees attended the event organized under the coordination of AA Academy and moderated by AA Visual News Director Fırat Çağlayan Yurdakul.

In response to Fırat Çağlayan Yurdakul's question about whether the sea lettuce, which has recently started to appear in the Sea of Marmara, is beneficial, Ceylan explained that sea lettuce can be found along the entire coastline from the Sea of Marmara to Hopa. He added, "In fact, scientifically, this is also an indicator of pollution. Ulva Lactuca (sea lettuce) spreads and proliferates rapidly in all areas where nitrogen and phosphorus-rich substances, caused by domestic waste, mix into the sea. This means that domestic waste is being dumped into the Sea of Marmara and the Black Sea."

"Jellyfish prefer enclosed bays and gulfs."

In response to Yurdakul's question, "There was a misconception that jellyfish appeared with pollution and fed on pollution. What can you say about this?" Ceylan explained that jellyfish have a high tolerance for low-oxygen areas and prefer enclosed bays and gulfs for reproduction.

Ceylan said, "Enclosed bays and gulfs are places where there is very little water movement. That's why jellyfish specifically prefer these areas, and they also bud there."

Ceylan, noting that seagrass meadows have also been on Turkey's agenda in recent years, mentioned that 20% of the air we breathe is owed to seagrasses. He added that seagrasses filter 6 liters of water per hour, and stated that the Sea of Marmara is currently one of the areas where these meadows can live healthily.

Upon Yurdakul reminding that Tahsin Ceylan was the first to capture the image of the prophet fish in the Sea of Marmara, Ceylan stated that he has not been able to capture the fish again since that day, saying, "We filmed it during a night dive and were shocked. It was something unexpected. It became a very beautiful memory for us."

Ceylan also mentioned that some people who saw the footage asked whether he used filters in the recordings. He explained that they did not use filters underwater, only a light that mimicked sunlight.

"If there are 100 species of fish in the Black Sea, the population of these 100 species is large."

In response to Yurdakul's question, "Is the Black Sea the youngest sea?" Ceylan replied, "Scientists assign 7,500 years to the Black Sea, meaning they call it a '7,500-year-old sea,' and it is also referred to as 'the youngest sea in the world' by scientists in this context."

In response to Yurdakul's question, "We have always heard the saying 'there is no life at the bottom of the Black Sea.' Is this true?" Ceylan explained that 7,500 years ago, as a result of a tectonic shift, seawater from the Sea of Marmara flowed into the Black Sea. He stated that as a result, the freshwater organisms in the Black Sea died, saying, "When life there died, it collapsed. These dead organisms sank to the bottom, and hydrogen sulfide gas was produced at the seabed. According to scientists, there is currently no oxygen below 150 meters in the Black Sea, and in the latest article I read, there is no oxygen below 86 meters."

Ceylan pointed to the high fish population in the Black Sea, saying, "If there are 100 species of fish in the Black Sea, the population of those 100 species is large. During a night dive in one place, you might see perhaps 20 bogues, 20 red mullets."

In response to Yurdakul's question about whether the amount of fish caught in the Black Sea has fallen below the amount produced, Ceylan stated, "In the Black Sea, it is no longer possible for the natural fish population to meet the demands of the human population. Therefore, this type of aquaculture is rapidly being promoted not only in the Black Sea but around the world. It also needs to be supported."

"Cultural heritage attracts people's interest." After the interview, Ceylan answered the questions from the guests.

In response to a guest's question, "What do you think about opening the Black Sea to diving tourism?", Ceylan stated that especially Sinop is rich in underwater cultural heritage.

Noting that alternative diving tourism should be developed, Ceylan said, "These types of cultural assets attract people's interest. Whether it's ancient anchors, shipwrecks... In fact, we bring this up on every platform."