Where can I watch “The Blue Planet” Season 1 Episode 7 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

Do I need to watch earlier episodes before “Tidal Seas”?

Watching earlier episodes in season 1 helps you follow the plot and character arcs leading into this episode.

Watch The Blue Planet Season 1 Episode 7 Online

“Tidal Seas” — Watch "The Blue Planet" Season 1 Episode 7 online in HD for free. Check streaming providers, cast, and episode details.

Oct 24, 2001 Season 1 Episode 7 50 min U

7.9 ★ ★ ★ ★ ★

9 votes

The Blue Planet Season 1

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Season 1 Episode 7 — Aired on Oct 24, 2001 • runs about 50 minutes.

Notable cast/guest names in this episode include David Attenborough.

This page includes 1 official still(s) (when available) plus legal availability links.

Looking for “watch The Blue Planet Season 1 Episode 7 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

The sun and moon move billions of tons of water with every turn of the tide. The strongest tides empty entire bays, smash trees on riverbanks, and strand sea creatures on suddenly dry land. Weaker tides control the movements of huge numbers of fish, coaxing stingrays though astounding underwater arches. And as the water recedes, the tide can create unbelievable landscapes - like a sparkling world of salt crystals inhabited only by tiny shrimp and bright pink flamingos.