Episódios

1

Borders42m

As an old friend visits Helen, a new mermaid arrives leaving Ryn questioning their motives. Maddie learns the truth behind Ians death, as Ben fights for his mothers treatments. While Xander is inspired to take on more responsibility.
2

Revelations42m

When another mysterious death is uncovered in Bristol Cove, Ryn suspects Tia. Maddie befriends a new acquaintance in Seattle. Helen warns the hybrids of trouble. Xander begins training and Ted revisits the past.
3

Survivor42m

Ryn seeks help only to learn the secret existence of her unborn child. Ben sets out on a dangerous path to help his mom, while Xander tries to establish himself in his new career. Helen consults with Eliza to help contact Sarge.
4

Life and Death42m

Ben and Maddie help Ryn guide her surrogate though a life-threatening delivery. Helen and Xander deliver a hybrid corpse to Beth at The Ranch. Xander faces danger on the high seas during a ride-along with the Bristol Cove water patrol.
5

Mommy and Me42m

Ryn returns to land to explore human motherhood. Maddie and Robb come across a gruesome discovery. Ben experiences mysterious side effects and Ted confronts Helen.
6

The Island42m

Ryn discovers a refuge of injured mermaids that escaped Tias violent takeover. Ben and Xander get caught in a battle with Tias troops. Maddie feeds Robb half-truths to secure his discretion. Ted explores his family lineage.
7

Northern Exposure42m

Ryn, Ben, Maddie must recruit new allies in the fight against Tia. Helen seeks answers when shes haunted by Donnas spirit. Tia obtains dangerous weapons she plans to use in her fight. Xander struggles to make amends with Annie.
8

Til Death Do Us Part42m

Ryn, Ben and Maddie must protect Bristol Cove from Tias army. Meanwhile, Bens injections are producing unexpected results, which alarms both him and the others. Xander juggles best man duties at Calvins wedding while also helping Helen.
9

A Voice in the Dark42m

Tia unleashes a deadly attack on Bristol Cove. Ryn, Ben and Maddie race against time to find a cure for Xanders mysterious illness, while anticipating Tias next move. Baby Hope returns to land to reconnect with Ryn.
10

The Toll of the Sea42m

In an effort to save Hope, Ryn and Ben confront Tia in an undersea battle between the mermaid tribes. Maddie and Robb work to find a cure for Xander, while Helen and the hybrids help restore order. Ted struggles to accept Bens reality. Season finale.
1

The Arrival42m

With more mermaids landing at Bristol Coves shores, the threat of discovery increases. After his encounter with the siren song, Ben tries to cope with the after effects. Maddies mom returns to town and tries to connect with her daughter. Meanwhile, Ryn attempts to adapt to life on land.
2

The Wolf at the Door42m

Ben, Maddie and Ryn desperately try and keep the newly arrived mermaid pack hidden from the rest of the town, but the new mermaids quick degradation on land forces them to get them back to the sea unnoticed during the towns Mermaid Beauty Contest. Elaine grows more suspicious of Helen and her connections to their family.
3

Natural Order42m

Ryn fights to maintain leadership of the pack when the other mermaids question her loyalties. Ben interferes in a mermaid ritual causing friction between himself and Ryn, meanwhile, Helen discovers more about her family lineage.
4

Oil & Water42m

Ryn decides they need to find another solution for housing the mermaids, as hiding them becomes increasingly difficult. Ben becomes a mentor to Levi as he tries to learn how men behave on land, while Maddie continues to struggle with her mothers renewed presence in her life.
5

Primal Instincts42m

Ryn continues to try to teach the other mermaids to be more human in order to better assimilate, but some are starting to resist her, causing Ryn to wonder if she herself is becoming too human. Maddie finds herself in a dangerous situation trying to help her mom. Meanwhile, Ben and Xander reconcile in order to work together to get the mermaid pack back into the water.
6

Distress Call42m

Dale copes with the fallout from Maddie and Ryns encounter with the man from Susans past, while Katrina continues to persuade the rest of the mermaid pack to get on her side—even if that means brute force against both mermaids and humans.
7

Entrapment42m

Tensions are rising following a shocking discovery. And living in a tank rather than the ocean is starting to have an adverse effect on many of the mermaids. Hoping to save her kind, and help her human circle, Ryn makes a deal with a complicated ally.
8

Leverage42m

Mermaids and humans join forces in a radical plan to stop the oil company, but their efforts have a devastating effect. And facing an uncertain future, Ben, Maddie and Ryn come together for a romantic farewell.
9

No North Star42m

Ben, Maddie and the other humans deal with the fallout from the attack on the oil rig, while the mermaids reacclimate to their ocean home. Ryn comes back to land to follow through on an agreement she made with the military, despite not knowing what their ultimate goals are.
10

All In42m

With Elaine Pownalls health worsening, she seeks treatment from the militarys medical trial using mermaid cells, but the procedure doesnt come without side effects to the mermaids. Meanwhile, Helen and Rick learn more about the hybrid status, their history in Bristol Cove, and discover they are far less alone than Helen once believed.
11

Mixed Signals42m

Maddie and Ben contend with how to help Ryn knowing that in order to help Elaine get better, they will need to continue the procedures on Ryn. Meanwhile, when one of the group gets sirened, there is more drive than ever to get to the bottom of how the siren song really works—further piquing the interest of the military in how Ryn can be of use to them.
12

Serenity42m

Ryn goes back to the ocean to get help for Ben and Maddies conditions but discovers that continuing to go back may get harder than she realized the longer shes on land. But when they learn that there may be a special place in Ryns homeland that could help them, Ben, Maddie and Ryn must all venture under the sea together to find the cure. Meanwhile, Helen and Ted connect over their shared family histories.
13

The Outpost42m

Mermaid mating season has begun, with Ryn knowing she will need to go back to the sea to help her colony. The hybrids convince one of the mermaids to come with them to a remote location, leading Helen and Ben on a hunt to find them. A journalist turns to Xander for help putting the pieces together of the night of the oil rig disaster, but Xander is torn on where his loyalties lie and what helping him could mean for his future.
14

The Last Mermaid42m

Mating season turned out to be less successful than everyone had hoped, leading them to question the possibility of the mermaids procreating on land. Ryn brings a new mate ashore for the good of the colony, but it raises emotional questions for Ben and Maddie.
15

Sacrifice42m

Ben and Xander are left dealing with a shocking discovery about Chris and his connection to the military. Meanwhile, Helen and Maddie reluctantly seek help from the hybrids as the threat of extinction looms over the mermaids. Ryn encounters the journalist who continues to chase his theories on mermaids to increasingly desperate ends.
16

New World Order42m

Ben faces a choice that has rippling consequences amongst mermaid, hybrid and human alike, as the truth about mermaids is exposed.
1

Piloto42m

A cidade costeira de Bristol Cove, uma vez conhecida por ser o lar de sereias, vira de cabeça para baixo com a chegada de uma menina misteriosa
2

O Encanto da Sereia42m

Ben e a equipe do The North Star descobrem um dispositivo que emite um som estranho. Enquanto isso, Ryn encontra abrigo na casa de um grande conhecedor do folclore local.
3

Entrevista com uma Sereia42m

A investigação de Dale e da polícia local começa a apontar diretamente para Ryn. Enquanto isso, a busca de Xander e Calvin por Chris esquenta.
4

Na Estrada42m

Quando a base militar fica em alerta máximo, Chris consegue escapar, mas não é o único.
5

A Maldição da Classe Faminta42m

Ben começa a investigar alguma suspeita de pesca excessiva. Decker aumenta seus esforços para encontrar a sereia fugitiva e mostra a verdadeira extensão de sua influência.
6

O Confronto42m

Quando Ben e Maddie vão à festa de angariação de fundos da mãe, um convidado inesperado aparece e se oferece para acabar com a pesca excessiva que ameaça a vida das sereias.
7

Morte no Mar42m

Ryn é levada para o interrogatório. Ben e Xander retornam ao fundo do mar para procurar respostas e são atendidos por um hóspede não convidado.
8

Humana42m

Bristol Cove chora uma perda, fazendo com que Ryn experimente uma nova emoção humana.
9

Briga de Rua42m

Donna e dois membros de sua colônia vão à costa, e começam a causar estragos por toda a cidade.
10

Resolução42m

A encantadora canção da sereia toma conta de Ben e Decker. Enquanto isso, Dale deve responder pelo crescente crime em Bristol Cove.