Sea Fever is a 2019 science fiction horror film directed by Neasa Hardiman. The film stars Hermione Corfield, Dougray Scott, and Connie Nielsen, and it combines elements of psychological thriller with a maritime setting.

The story follows Siobhán (Hermione Corfield), a marine biology student who embarks on a research trip aboard a small fishing trawler in the Atlantic Ocean. As the crew ventures further into the sea, they encounter a mysterious phenomenon that disrupts their expedition.

When they discover an unusual and invasive species, the crew soon finds themselves facing a terrifying and life-threatening situation.

As the crew grapples with the consequences of their discovery, tensions rise, and paranoia sets in. The film explores themes of isolation, human fear, and the impact of nature on humanity. Siobhán’s struggle to understand the situation and find a way to survive becomes central to the narrative.

Sea Fever is noted for its atmospheric tension and character-driven storytelling. The film effectively builds suspense through its confined setting and the psychological turmoil of the characters. With strong performances and a unique blend of horror and science fiction, it offers a thought-provoking take on the relationship between humans and the natural world.

The film received positive reviews for its originality and ability to create a sense of unease, making it an engaging watch for fans of the genre.