H2O: Just Add Water: Season 2, Episode 26

Unfathomable (21 Mar. 2008)

TV Episode  |  TV-PG  |   |  Drama, Family, Fantasy
Your rating:
    1 2 3 4 5 6 7 8 9 10 -/10 X  
Ratings: 8.5/10 from 58 users  
Reviews: write review

Lewis find out that there is a way for a mermaid to lose her powers and attempts to lure Charlotte to the Moon Pool. The plan backfire and it looks like all the girls may lose their powers.



, (creator)
0Check in

Watch Now

$0.00 with Prime Instant Video


10 Best Back-to-School TV Shows

Dust off your varsity jacket and get excited for fall with our list of the 10 best back-to-school TV shows.

Visit our Family Entertainment Guide

User Lists

Related lists from IMDb users

a list of 1796 titles
created 8 months ago

Related Items

Search for "Unfathomable" on Amazon.com

Connect with IMDb

Share this Rating

Title: Unfathomable (21 Mar 2008)

Unfathomable (21 Mar 2008) on IMDb 8.5/10

Want to share IMDb's rating on your own site? Use the HTML below.

Take The Quiz!

Test your knowledge of H2O: Just Add Water.
« Previous Episode | 52 of 78 Episodes | Next Episode »


1 video »


Episode cast overview:
Cariba Heine ...
Angus McLaren ...
Burgess Abernethy ...
Caroline Kennison ...
Trent Sullivan ...
Martin Vaughan ...


Max Hamilton tells Lewis that this full moon is different. When the planets align, the moon can take all a mermaids powers away for good if they are in the moon pool when it passes overhead. Frustrated with Charlotte, he decides to trick her to getting into the moon pool. Cleo discovers that Lewis and Charlotte have gone to the moon pool and she gets worried and decides to swim out to see what is going on. When all 3 girls arrive, Charlotte reveals that she knows about the special moon and attempts to get Emma, Cleo and Rikki into the water instead. Written by Anonymous

Plot Summary | Plot Synopsis

Plot Keywords:

mermaid | teenager | See All (2) »


Drama | Family | Fantasy



Release Date:

21 March 2008 (Australia)  »

Company Credits

Show detailed on  »

Did You Know?


Final appearence of Emma Gilbert. See more »


No Ordinary Girl
(main title theme)
Performed by Kate Alexa
Written by Shelley Rosenberg
(Season 2)
See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Message Boards

Recent Posts
Where is the discussion for the Anime version that just popped up on net delectradoll
Why don't any of the girls tell their parents? danaenicole
How do they shave or wash their legs? mshacket
What about the Dolphins? Lennox7320
Why are the 3 main girls so mean? cautionersx
Ugh. Cleo's sister xThatsWhatSheSaidx
Discuss Unfathomable (2008) on the IMDb message boards »

Contribute to This Page