Jo Jung Suk as a convincing merman in Legend of Blue Sea.

Legend of Blue Sea continues with a string of cameo appearances by various actors and actresses. First they had Kim Sung Ryung, f(X)'s Krystal, Hong Jin Young, Park Jin Joo and now they have Jo Jung Suk in the series as well.

This time Jo Jung Suk steps into the picture as the so-called 'male mermaid'. His extraordinary charm and special grade cameo certainly spiked up the ratings in Episode 7.
Jo Jung Suk plays as Yoo Jeong Hoon who works as a part of the rescue team as he was also a former 'male mermaid' living on land.

On this day, Shim Chung wandered around the city of Seoul to the Han River. Feeling hungry, she took off her shoes and jumped into Han River to feast on fish. At that time, Jeong Hoon was working as a paramedic appeared and thought she was trying to commit suicide. Both were rather surprised to see each other. Since they are sort of 'comrades', he brought her back to his work office. He advises her money is important to survive on land. He showed her a bag of pearls whenever he shed a tear, he collected them. The tears and pearls of a mermaid enables one to survive in the human world. 

Going on, Jeong Hoon helps Shim Chung to dress up prettily for the man she likes. He taught her many types of ways to impress and make the man jealous as well. Together both of them went to watch sad movie, shed tears and sold the pearls to make money. In fact the trick worked for Shim Chung who managed to impress Heo Joon Jae. 

He warns Shim Chung that once a mermaid is out of water for too long, the heart starts to harden. He warns her that humans tend to change their feelings when mermaids don't. There are no human beings who will accept their existence in the world if they have been detected. 

Jo Jung Suk was recently in the drama Jealousy Incarnate as Hwa Shin- the fiesty looking reporter who finds himself his true love after discovering he has 'male breast cancer'. His sparking image has brought more charms in Legend of Blue Sea. 

The drama remains on 1st spot with ratings 18.9%- it dropped 1.5% compared to previous episode.