Amiah-Rae finds out all about some of the smallest underwater creatures – seahorses! Chantelle meets seahorse fans Joss and Gabriel and puts on her wetsuit for an underwater safari. Rory and his son Sandy are at an aquarium just in time for seahorse feeding time.

Chantelle and Rory's fact files explain how seahorses hide, how they use their prehensile tails and how many babies they have. It's also time to find out how seahorses help the ocean – in the food web and as an indicator species. This episode's Teeny Tiny Task is to make some seahorse art with recycled beach materials.

Freddie finds out all about creatures that live on land and underwater – newts. Chantelle is at a zoo to meet Kira and two very special salamanders while Rory and his son Sandy are at a country park to meet a very special protected newt.

Chantelle and Rory's fact files explain why great crested newts are protected, what kinds of newts live in the UK and where they live. It's also time to find out why newts are important to our planet. This episode's Teeny Tiny Task is to make a winter home for newts – a hibernaculum.