Ben Timony

Rikki and Cleo face their final year of high school without Emma.

The Moon Pool is damaged after the crystals have been harvested; a comet heads for Earth.

Bella wants to ask Will to the end of the year beach party, but thinks he has asked Rikki instead.

A comet is causing fish to flee from Mako Island.

Cleo's dad gets a second job; Bella and Will try to find similar interests.

Sophie becomes manager of the cafe; Bella can't stop sneezing.