There were three seasons of H2O & a spin off series called Mako Mermaids.
Both shows (all six seasons combined) are currently (August 2015) streaming on Netflix.
You can look it up at Wikipedia.org but I think it has 26 series and then it's over, because the director thought the actors got too old :).
There is season 1,2 and 3 but onlz till episode 17, the next 9 episodes will come out April 11th !
3 and theres the 4 one coming out in 2011 wich Emma will come :)
There's 26 episode's in season 3
The awnser is 26.
26 episodes
2
Season 1 has 60 episodes Season 2 has 90 episodes
90 individual episodes in each 30 minute episodes just like season 1
Season 1 has 60 episodes Season 2 has 90 episodes
Season 3 has 22 episodes.
There are 13 episodes in Season 1.
There are 13 episodes just like every other season.
Season 1: 20 episodes Season 2: 20 episodes Season 3: 8 episodes
Season 1 - 23 episodes Season 2 - 24 episodes Season 3 - 23 episodes Season 4 - 17 episodes Season 5 - 24 episodes
Season 1 has 60 episodes Season 2 has 90 episodes
90 individual episodes in each 30 minute episodes just like season 1
Vampire Knight Guilty is the second season of it, but it has 13 episodes just like the first season.
Season 1 has 60 episodes Season 2 has 90 episodes
Season 2 of "Inuyasha" has 26 episodes .
There was 22 episodes in season 10.
Season 3 has 22 episodes.
There are 28 episodes in Season 5.
There are 13 episodes for the first season of iZombie.