The Deep — Season 4
01 The Hole Truth
May 30, 202222m★ 5.5
Ant and Fontaine realise that their grandparents found Lemuria before them - but where are they now? The Nektons follow the trail they left but run into giant, predatory Sand Strikers. Was this the fate of their grandparents?
02 The Biggest
May 31, 202222m★ 5.5
Ant searches a deep chasm for clues to his grandparents' fate but is stunned to find Mad Madeline there. She has been looking for the biggest sunken treasure ever, but all she has managed to find is the biggest monster.
03 Little Problems
Jun 1, 202222m★ 3.0
Three baby Monumential turtles hatch, and they are the size of city blocks. The playful babies accidentally sink a fishing trawler. Can the Nektons wrangle these creatures before they sink even more ships?
04 The Lead
Jun 2, 202222m★ 5.5
Does Dolos really have a lead on finding Ant’s grandparents? Or is he leading the Nektons into a dangerous chasm between moving tectonic plates for nefarious purposes?
05 AWOL
Jun 6, 202222m★ 5.5
A mysterious dolphin in a sophisticated electronic harness zaps all the Rover's power. Ant and Fontaine manage to remove the harness, but can they rehabilitate this cybernetic dolphin to survive in the wild?
06 Deceptive Appearances
Jun 7, 202222m★ 5.5
Mad Madeline steals the dangerous Sceptre of Queen Dorius.
07 Glass Houses
Jun 8, 202222m★ 5.5
The Nektons help locate a legendary Singaporean glass cabinet. However, they discover it is guarded by a terrifying and familiar creature.
08 Unidentified Floating Objects
Jun 9, 202222m★ 5.5
The Nektons are busy recovering sunken shipping containers, so when Bethany the fish finds herself in danger, only Jeffrey can save her.
09 At the Bottom of the Gyre
Jun 13, 202222m★ 5.5
Ant has created a clever machine to clean up a vast oceanic rubbish dump. However, when the machine is been eaten by a huge creature, it's up to the Nektons to save it.
10 Walking with Fish
Jun 14, 202222m★ 3.0
Ant and Fontaine discover the secret of the Bajau Laut people, a tribe of sea nomads living in the South China Sea. The pair are determined to help them - but how do you find a fish that walks?
11 Getting Warmer
Jun 15, 202222m★ 5.5
Ant and Fontaine rescue a polar bear from the middle of the ocean. However, when they bring her onboard, they realize she is close to giving birth. Can the Nektons move her to a safer place in time?
12 The Big Clue
Jun 16, 202222m★ 5.5
Fontaine is amazed when Smiling Finn tells her that he has detected a signal from her grandparents’ missing submarine. Is this a joke, an elaborate scam, or something even more amazing?
13 The Inside Story
Jun 20, 202222m★ 5.5
A submarine is trapped in an astonishing location. The Nektons launch an elaborate and dangerous rescue mission to save the people inside. Could it be their missing grandparents?