Syrena is a character from Pirates of the Caribbean: On Stranger Tides. She is a mysterious mermaid that resided in Whitecap Bay. This beautiful, alluring, and enigmatic mermaid swims against the tide of her more lethally-minded sisters of the sea.
Mystery surrounds this mermaid, even down to her true name, for "Syrena" was what she's called by missionary Philip Swift during her captivity by Blackbeard. Fate had brought Philip and Syrena together, but their connection goes much deeper. After her fellow mermaids led an attack on Blackbeard's crew, Syrena and Philip began to recognize a quality in each other, drawing them together and allowing them to become allies. Each discover more of their true beings, but risk their lives when they listen to the sounds of their hearts.
She is portrayed by Àstrid Bergès-Frisbey.
Syrena possessed a unique personality for a mermaid. Instead of being vicious and manipulative like the rest of her kind, she was reserved and compassionate. Other than being hostile when the pirates captured her at Whitecap Bay, Syrena displayed no traits of vicious behavior and does not attempt to kill any human, or even show the slightest desire to. It is unknown if she ever displayed behaviour like her sister mermaids in the past and it changed because of what she sensed in Philip, or if she was different all along from the other mermaids and never was vicious. She has all the skills of a mermaid, but uses them to save Philip's life when a lighthouse exploded and debris nearly fell on him, instead of drowning him. She fell in love with Philip, who saved her life, making her the only known mermaid ever to fall in love with a human.
During the quest for the Fountain of Youth, Blackbeard's crew of the Queen Anne's Revenge arrived to Whitecap Bay to capture a mermaid, as they needed a mermaid's tear in the ritual of the Fountain of Youth. After the battle at Whitecap Bay, the then-unnamed Syrena was captured by Blackbeard's crew shortly after saving the missionary Philip Swift from being crushed by falling debris. As mermaids' tears couldn't keep for long, the mermaid had to be brought along so that a tear could be harvested fresh, so she was carried in a large water tank carried by members of Blackbeard's crew as they trekked through the jungle. Part way through the journey the tank was broken, and the mermaid fell to the ground, losing her aquatic form and assuming a human form. Missionary Philip Swift removed his shirt and cover mermaid's naked body. Not used to walking on two feet, and wounded from an earlier attack, she was a stumbling, vulnerable figure. This caused Philip to carry her the rest of the way through the jungle.
During the journey, the mermaid fell deeply in love with Philip, who she thought was different than the other crewmen, being a protector. It was Philip who gave the mermaid her name of "Syrena", in order to make Blackbeard see her as a person and not a creature. As a man of God, he was the only crew member who treated her with any dignity or respect. At the Jungle Pools, where mermaids harvested their tears, Blackbeard as he tried forcing Syrena to cry, and used Philip and Syrena's strong bond to his advantage. Blackbeard had Philip apparently killed and seemingly abandoned Syrena at the pools, half immersed in the water, until Philip revealed that he was alive, which made Syrena cry a tear of joy. Blackbeard was able to obtain Syrena's tear and left the mermaid to die. The next day, after escaping from battle at the Fountain of Youth, a mortally-wounded Philip returns to the Pools to cut Syrena loose before the she swims off. Syrena then managed to find the two Chalices of Cartagena and gave them to Jack Sparrow, who needed them to save Angelica from dying, warning him to not waste her tear.
As an injured Philip tried putting water on his wounds, Syrena returned to the Jungle Pools and offered to save him, though he only asked for her forgiveness. Syrena then gives Philip a mermaid kiss, which was said to prevent one from drowning, and pulls him underwater with her as they swam off together through the pools to freedom.
- Syrena is inspired by Ariel, another mermaid, from The Little Mermaid. Also, Syrena and Ariel shared a couple of similarities, such as falling in love with a human and having their tails turned into legs to walk on land.