S2 E124 min
Reported Missing
Clownfish are disappearing from the bay, so the girls spring into action to find out why. A mysterious diver could be the culprit.
H2O: Mermaid Adventures
Season 2
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13 episodes · First aired 2015-10-01
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Episodes
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Showing 13 at a time
S2 E224 min
Memory Lapsse
When the stone circle causes Cleo to forget that she can turn into a mermaid, Emma and Rikki scramble to keep her from transforming in public.
S2 E324 min
Valentine's Day
Lewis promises to tell his Valentine's Day sweetheart, Abby, a big secret; Cleo is jealous and scared that he will give away the girls' mermaid identities.
S2 E424 min
Kidnapped!
The girls and Bobby the dolphin untangle a mystery when Bobby's twin, Robby, is captured by someone in a mysterious speedboat.
S2 E524 min
A Strange Phenomenon
When her father goes to sea on a mission, Cleo's worries begin to affect her dreams. Her nightmares could be trying to tell her something.
S2 E624 min
Handle with Care
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.
S2 E724 min
The Return of the White Mermaid
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.
S2 E824 min
Three Days Underwater
When a spell forces Rikki to remain a mermaid until the next full moon, she has to find a way to lie low, and underwater, for three full days.
S2 E924 min
Robot Duel
Lewis is thrilled when the university hosts an underwater robot competition, but the girls fret over the safety of their marine friends.
S2 E1024 min
The Creature from the Bay
Emma's younger brother catches a glimpse of her mermaid tail and thinks he's seen a sea monster, and soon the whole town is in an uproar.
S2 E1124 min
Underwater Takeover
The mermaids turn to a cranky giant octopus for help when the Vandals invade the bay with a horde of stinging jellyfish.
S2 E1224 min
Imminent Danger
Having played one too many practical jokes, Teddy can't get anyone to believe his warning that an underwater volcano is about to erupt
S2 E1324 min
Trapped
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.