The BEST episodes of H2O: Mermaid Adventures season 2

Every episode of H2O: Mermaid Adventures season 2, ranked from best to worst by thousands of votes from fans of the show. The best episodes of H2O: Mermaid Adventures season 2!

“H2O – Mermaid Adventures” is a combination of comedy, friendship and adventures, both on land in Dolphin City and in a marvelous and magical undersea world. The brand-new animated series is taking the original concept of the world-hit live-action series to a whole new level. While exploring the mysterious Island of Mako, three quite ordinary teenage girls fall under a spell that changes their lives. From now on, whenever water splashes any one of them, they are transformed into mermaids! Endless situations and missions draw the three friends into the incredible underwater world where they make new friends: Bernie the hermit crab, Zita the inquisitive eel, Teddy the kid turtle, Sue the mystical manta ray and Carlotta the diva-jellyfish – and have endless fun and wonderful, enchanting adventures under the sea.

Last Updated: 9/30/2024Network: NetflixStatus: Ended

Three Days Underwater

8.00

2 votes

#1 - Three Days Underwater

Season 2 - Episode 8 - Aired 7/15/2015

When a spell forces Rikki to remain a mermaid until the next full moon, she has to find a way to lay low -- and underwater -- for three full days.

Watch Now:Amazon Apple TV

Kidnapped!

7.50

2 votes

#2 - Kidnapped!

Season 2 - Episode 4 - Aired 7/15/2015

Bobby's twin brother gets abducted by someone in a curious speedboat.

Watch Now:Amazon Apple TV

Memory Lapse

7.12

33 votes

#3 - Memory Lapse

Season 2 - Episode 2 - Aired 7/15/2015

Cleo forgets about her ability to change into a mermaid, so Emma and Rikki must make sure she doesn't transform in public

Watch Now:Amazon Apple TV

Imminent Danger

7.06

31 votes

#4 - Imminent Danger

Season 2 - Episode 12 - Aired 7/15/2015

Having played one too many practical jokes, Teddy can't get anyone to believe his warning that an underwater volcano is about to erupt.

Watch Now:Amazon Apple TV

Reported Missing

7.00

33 votes

#5 - Reported Missing

Season 2 - Episode 1 - Aired 7/15/2015

In the Season 2 opener, clown fish begin to vanish, so the girls investigate why this is happening.

Watch Now:Amazon Apple TV

Valentine's Day

7.00

33 votes

#6 - Valentine's Day

Season 2 - Episode 3 - Aired 7/15/2015

Lewis wants to share a big secret with Abby on Valentine's Day, and Cleo worries that he will tell her about the girls' mermaid identities.

Watch Now:Amazon Apple TV

Trapped

7.00

2 votes

#7 - Trapped

Season 2 - Episode 13 - Aired 7/15/2015

Lewis joins a famous explorer in a high-tech submarine to hunt for a sunken treasure ship, but a mishap strands them at the bottom of the sea.

Watch Now:Amazon Apple TV

The Return of the White Mermaid

6.93

30 votes

#8 - The Return of the White Mermaid

Season 2 - Episode 7 - Aired 7/15/2015

To protect the White Mermaid, the girls guide explorer Stanley Finch to the underwater stone circle, whose magic makes Stanley think he's a pirate.

Watch Now:Amazon Apple TV

Handle with Care

6.67

3 votes

#9 - Handle with Care

Season 2 - Episode 6 - Aired 7/15/2015

Tired of the racket Miriam and Zane are making at their beach party, Bernie leaves his cave -- giving the Vandals a chance to move right in.

Watch Now:Amazon Apple TV

A Strange Phenomenon

6.00

1 votes

#10 - A Strange Phenomenon

Season 2 - Episode 5 - Aired 7/15/2015

Cleo has some powerful nightmares after her father goes to sea on a mission.

Watch Now:Amazon Apple TV

The Creature from the Bay

6.00

1 votes

#11 - The Creature from the Bay

Season 2 - Episode 10 - Aired 7/15/2015

Emma's younger brother catches a glimpse of her mermaid tail and thinks he's seen a sea monster -- soon the whole town is in an uproar.

Watch Now:Amazon Apple TV

Robot Duel

4.00

1 votes

#12 - Robot Duel

Season 2 - Episode 9 - Aired 7/15/2015

Lewis is thrilled when the university hosts an underwater robot competition, but the girls fret over the safety of their marine friends.

Watch Now:Amazon Apple TV

Underwater Takeover

3.00

1 votes

#13 - Underwater Takeover

Season 2 - Episode 11 - Aired 7/15/2015

The mermaids turn to a cranky giant octopus for help when the Vandals invade the bay with a horde of stinging jellyfish.

Watch Now:Amazon Apple TV