The BEST episodes of The Deep (2015) season 2

Every episode of The Deep (2015) season 2, ranked from best to worst by thousands of votes from fans of the show. The best episodes of The Deep (2015) season 2!

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

7.89

9 votes

#1 - Hidden Secrets

Season 2 - Episode 8 - Aired 9/4/2017

The Nektons' nemesis Alpheus Benthos breaks into the Aronnax to steal the Ephemychron and stop the Nektons from finding Lemuria forever! Ant is determined to get it back at all costs.

Watch Now:Amazon Apple TV

7.80

10 votes

#2 - Treacherous Waters

Season 2 - Episode 4 - Aired 8/7/2017

The Nektons enter an area of the Bermuda Triangle where the laws of physics don't seem to apply. What's more, they can't escape! Can it be that Jeffrey has to save the day?

Watch Now:Amazon Apple TV

7.80

5 votes

#3 - The Maze

Season 2 - Episode 9 - Aired 9/11/2017

The Nektons find a mysterious underwater maze. When they enter it, walls shift and they become disoriented. They're soon trapped inside and, what's worsethey're not alone!

Watch Now:Amazon Apple TV

7.63

8 votes

#4 - Thunder & Lightning

Season 2 - Episode 12 - Aired 10/3/2017

At Catatumbo Bay, a lightning storm has been raging for hundreds of yearsand for the first time, it's intensifying. The Nektons' investigations reveal that a gigantic creature is responsible!

Watch Now:Amazon Apple TV

7.60

10 votes

#5 - The Gates

Season 2 - Episode 13 - Aired 10/10/2017

Alpheus has finally found the gates to Lemuria, and the Nektons must stop him before he unleashes powers on the world that even he can't control.

Watch Now:Amazon Apple TV

7.29

7 votes

#6 - The Baltic Sea Anomaly

Season 2 - Episode 2 - Aired 7/24/2017

Is the Baltic Sea anomaly really a UFO that crashed into the ocean 600 years ago? Ant thinks it is. But what the Nektons find inside is even more strange and frightening.

Watch Now:Amazon Apple TV

7.29

7 votes

#7 - Whale of a Tale

Season 2 - Episode 10 - Aired 9/19/2017

The Nektons encounter a huge, white whale, but Devil Daniels: Monster Hunter is trying to capture it. When they discover who the whale really is, the Nektons go head-to-head with Daniels to save it!

Watch Now:Amazon Apple TV

7.29

7 votes

#8 - The Missing

Season 2 - Episode 11 - Aired 9/26/2017

The Nektons find the Dark Orca pirate submarine completely deserted! It's as if the pirate crew have abandoned it. But why? And what are those mysterious, ghostly sounds?

Watch Now:Amazon Apple TV

7.25

12 votes

#9 - Finn Comes Aboard

Season 2 - Episode 6 - Aired 8/21/2017

Pirate boy Smiling Finn comes to the Nektons pleading for help. He wants them to stop his father, Captain Hammerhead, from stealing a treasure that he believes will destroy his family.

Watch Now:Apple TV

7.11

9 votes

#10 - Beware the Sentinels

Season 2 - Episode 7 - Aired 8/27/2017

A mysterious, ancient temple beneath the sea has been hidden for centuries. The Nektons discover it was hidden for a very good reason, and the local sea life protect it at all costs!

Watch Now:Apple TV

7.09

11 votes

#11 - From the Stars

Season 2 - Episode 1 - Aired 7/17/2017

The Nektons try to stop a fallen satellite's fuel from polluting a marine sanctuary. But someone else is interested in the satellite - Alpheus Benthos, who is intent on finding Lemuria before them!

Watch Now:Apple TV

6.71

7 votes

#12 - Mermaids

Season 2 - Episode 3 - Aired 7/31/2017

Mermaids don't exist, right? Well, if that's true, then what's that mermaid-shaped thing swimming outside the Aronnax? Ant is determined to find out, even when pirates get in his way.

Watch Now:Apple TV

6.00

10 votes

#13 - Kenji’s Monster

Season 2 - Episode 5 - Aired 8/14/2017

A giant, upright creature, straight out of a monster movie, is walking across the ocean floor, causing havoc. Kaiko knows this isn't a normal sea creature. But what is it? And how can it be stopped?

Watch Now:Apple TV