Thalassa is a French documentary television series, broadcast for many years on Friday at 8:50 pm on France 3 and presented by Georges Pernoud.

[1] From 2 October 2017, Fanny Agostini presented the show,[2] once a month on a Monday at 8:55 pm, alternating with other discovery programs, including Faut pas rêver, another show created by Pernoud.

The show is also broadcast on TV5 Monde and is subtitled in six languages, including English.

It is entirely focused on the sea (θάλασσα, thálassa in Ancient and Modern Greek) – geography, ecology, fishing, transportation, and yachting.

[citation needed] It started on 27 September 1975 and is still one of the most prominent TV programs in France.