The BEST episodes of The Deep (2015) season 3

Every episode of The Deep (2015) season 3, ranked from best to worst by thousands of votes from fans of the show. The best episodes of The Deep (2015) season 3!

The sea is deep and full of secrets! Meet the Nektons, a family of explorers uncovering the unknown mysteries that lie beneath.

Last Updated: 7/1/2025Network: ABC MeStatus: Ended

7.33

6 votes

#1 - The Unicorn

Season 3 - Episode 7 - Aired 3/9/2019

Ant tries to locate a "diamond-horned sea-unicorn" as a present for Fontaine's birthday. But Dolos and Devil Daniels are also hunting it.

Watch Now:Amazon Apple TV

7.17

6 votes

#2 - Just Eaten

Season 3 - Episode 4 - Aired 3/6/2019

The Aronnax and Alpheus' sub are trapped within a giant Jellyfish Monumential. They've been eaten and the jellyfish won't let food out.

Watch Now:Amazon Apple TV

7.17

6 votes

#3 - The Circle Game

Season 3 - Episode 6 - Aired 3/8/2019

The Nektons find an underwater crop circle. It's made by a giant male puffer fish to attract a mate. Can Ant help the romance along?

Watch Now:Amazon Apple TV

7.17

6 votes

#4 - Purple Tide

Season 3 - Episode 8 - Aired 3/10/2019

The Nektons try to save an island from "The Purple Tide" that legend says will destroy everything. To save it, they need to find "The Protector".

Watch Now:Amazon Apple TV

7.14

7 votes

#5 - Family Ties

Season 3 - Episode 5 - Aired 3/7/2019

Devil Daniels insists he's relocating a dangerous killer whale. But it is a scam that turns dangerous - for Ant and the whale.

Watch Now:Apple TV

6.83

6 votes

#6 - The Sceptre

Season 3 - Episode 13 - Aired 3/15/2019

The Nektons find the Queen's sceptre. But when faced with the Kraken and the Electric Ray Monumential together, Ant can't make it work.

Watch Now:Apple TV

6.80

5 votes

#7 - More Thunder and Lightning

Season 3 - Episode 11 - Aired 3/13/2019

The Nektons return to the mysterious Lemurian Gates they found previously. Exploring within, they're stunned to discover Lemuria is here.

Watch Now:Apple TV

6.80

5 votes

#8 - Lemuria

Season 3 - Episode 12 - Aired 3/14/2019

The Nektons explore Lemuria but Fontaine realises the others are being affected by a dangerous algae. Can she find an antidote and save them?

Watch Now:Apple TV

6.50

6 votes

#9 - Kidnapped

Season 3 - Episode 10 - Aired 3/12/2019

Jeffrey is kidnapped, in his "Jeffrey Knight", by Dark Orca pirates. Can Jeffrey turn the tables and save himself?

Watch Now:Apple TV

6.43

7 votes

#10 - Off Line

Season 3 - Episode 2 - Aired 3/4/2019

The internet being down is the worst thing imaginable for Ant and Fontaine - until Ant finds the sea monster responsible! Can he save both?

Watch Now:Apple TV

6.43

7 votes

#11 - Friends In Deep Places

Season 3 - Episode 3 - Aired 3/5/2019

Trying to rescue Jess Gorman in an underwater cave proves dangerous for Ant and Fontaine until a Manatee comes to their aid.

Watch Now:Apple TV

6.33

6 votes

#12 - The Treasure

Season 3 - Episode 1 - Aired 3/3/2019

The Dark Orca pirates unwittingly steal a treasure that can awaken a Monumential and possibly destroy them and the Nektons.

Watch Now:Apple TV

6.33

6 votes

#13 - The Race

Season 3 - Episode 9 - Aired 3/11/2019

Ant wants to go faster than the fastest fish in the sea - the sailfish. But he hasn't counted on a deadly oil spill.

Watch Now:Apple TV