Nagi-Asu: A Lull in the Sea
After their middle school closes down, four students from the sea are forced to attend classes on land, causing all sorts of havoc.
S01:E01 - In Between the Sea and the Land
Umimura residents Sakishima Hikari, Mukaido Manaka, Hiradaira Chisaki, and Isaki Kaname are transfered to Mihama Junior High on the surface.
S01:E02 - The Chilly Desert
Hikari gets annoyed that Manaka and Tsumugu are talking and tells him to not concern himself with the people of Umimura.
S01:E03 - The Tradition of the Sea
Akari and Hikari learn about the rule that if you are seeing someone from the surface, you will be banished from the village.
S01:E04 - Because We're Friends
Hikari finds out that Akari's boyfriend is the father of the girl who had been fighting him, Miuna. Miuna asks him to help break them up.
S01:E05 - Hey, Sea Slug
Akari is able to tell Uroko-sama and her father how she feels about Itaru, and is starting to smile a little again.
S01:E06 - Beyond Tomoebi
The students get together for swimming class. The sea kids are getting used to school on land and are getting along with the other kids.
S01:E07 - The Ofunehiki Shakes
After school, the classmates gather for the final stretch finishing the Ojoshi-sama.
S01:E08 - Beyond the Wavering Feelings
Akari decides that she is going to live on the surface, and Hikari also leaves the house because he feels that Akari isn't being treated fairly.
S01:E09 - Unknown Warmth
Miuna makes a snow sea slug out of the saltflake snow that has fallen. Meanwhile, Hikari thinks about how his father is doing alone in the sea.
S01:E10 - The Saltflake Snow Falls and Falls
Uroko-sama tells that the Sea God's powers have become much smaller, and that the saltflake snow continues to fall both in the sea and on the surface.
S01:E11 - The Changing Times
Kaname suddenly confesses his feelings to Chisaki in front of her parents. Hikari and Manaka do their best to go on with the Ofunehiki.
S01:E12 - I Want to Be Kind
Akari makes the decision to take Ojoshi-sama's place in the Ofunehiki and head into to marriage with Itaru like she was headed toward the Sea God.
S01:E13 - Unreachable Fingertips
After a brief talk with Tsumugu, Manaka returns home and meets Hikari. In the occasion, Hikari reaffirms his feelings for her.
S01:E14 - The Promised Day
Five years later, the sea over Shioshishio is frozen and the surface enters into a continued winter.
S01:E15 - The Protector of Smiles
Chisaki learns of Hikari's return but refrains from meeting him. Hikari is still recovering from his hibernation when he meets his old friends.
S01:E16 - The Whispers of the Faraway Waves
Hikari starts back at Hama Junior High and is in the same class as Miuna and Sayu. He fits right in instantly has his old teacher back.
S01:E17 - The Sick Two
Akari tells Hikari and Miuna that she was informed of Kaname waking from hibernation. They hurry over and find that Kaname hasn't aged at all.
S01:E18 - Shioshishio
By following Miuna's directions, the three finally arrive at Shioshishio. Hikari decides to return home and pay a visit to his father first.
S01:E19 - The Lost, Lost Little...
After some examination, it is confirmed that although still asleep, Manaka is in good health and should wake up soon.
S01:E20 - Sleeping Beauty
With no signs of Manaka awakening, Hikari keeps searching for Uroko with Kaname and Chisaki's help.
S01:E21 - The Messenger From the Bottom of the Sea
Hikari and his friends are surprised with Manaka, who, just woken up, acting as if nothing changed, without a single Ena remains on her.
S01:E22 - Something Lost
Tsumugu is cursed with the curse fish on his arm. Everyone looks for Uroko-sama to find out what's going on with everyone in Shioshishio.
S01:E23 - Who Do These Feelings Belong To?
Uroko-sama tells Hikari and Miuna that Manaka has lost the heart to fall in love with anyone. Hikari tries to find a way to turn Manaka back to norm.
S01:E24 - Detritus
Tsumugu reveals when his Ena awakened he felt the feelings of others around him and is certain Manaka's feelings were there.
S01:E25 - Love Is Like the Sea
During the festival, the group goes into the frozen sea and find Miuna and Manaka are connected through their feelings for Hikari.
S01:E26 - The Color of the Sea. the Color of the Earth. the Color of the Wind. the Color of Your Heart. Your Color.
After Hikari offers his feelings to the Sea God, the Sacred Flame burns away the grave of Ojoshi, and he rescues Miuna.