1. Amanchu! (Man of the Sea)
Amanchu! Advance tells the story of Hikari Kohinata – a cheerful, energetic 15-year-old girl; lives in a beautiful seaside town on the Izu Peninsula. On the first day of high school, she meets Futaba Oki – a quiet girl who has just transferred from Tokyo. Before Futaba knew it, she was drawn by Hikari to a sport that was very new to her – scuba diving. Since then, Futaba has slowly begun to come out of his shell and learn how to dive in the ocean.
2. Waiting in the Summer
Waiting in the Summer is about Kirishima Kaito testing his camcorder one night in a small city when he was damaged by a strange explosion. But strangely the next morning he woke up and nothing happened or remember anything about last night. He went to school as usual, and he and his friends made a movie and invited two Senpai, Takatsuki Ichika and Yamano Remon to participate. Unexpectedly, Kaito’s sister went abroad for work and Ichika came to live with him. And Ichika’s secret is gradually revealed. Let’s enjoy a summer with this crew!
3. Nagi-Asu: A Lull in the Sea
Once upon a time, mankind lived in the ocean. But some have left, heading to the mainland. Some live in the sea, some live on the shore. The story revolves around Hikari Sakishima, Manaka Mukaido, Hiradaira Chisaki and Isaki Kaname. The inhabitants of the ocean. When Namiji High School, the school under the sea was closed. They have to go to Mihama High, a school on the mainland. There, they met Kihara Tsumugu, who lived on the mainland. The unexpected meeting made the journey of the group of young people turn to a new page.
4. Gargantia On The Verdurous (Giant Angel)
In the future, the human alliance in the galaxy is still constantly fighting against something called “Hideous”. During the war’s climax, Redo, a young lieutenant, and his humanoid mobile weapon were sucked into a dimensional gap. Waking up after a long sleep, Redo realizes that he is on Earth, the whole planet is completely covered by the sea, people live together in giant boats…
5. My Bride is A Mermaid
Michishio Nagasumi is an ordinary high school student, in an ordinary school, with a normal family, although his parents are a bit…not normal. One summer day, when he returned to his hometown, he went swimming and almost drowned and was saved by an extremely beautiful mermaid girl – who is the daughter of the boss of a gang “gangster mermaid”. The trouble started when the girl came home to be his fiancée.
Source link: Top 5 good anime suitable for “plowing” in the hot summer
– Emergenceingames.com