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RTÉ

Let's Dive In

Join Phil and Julie on their adventures as they dive in to children’s questions on this charming little podcast about life, the universe and everything in it. Whether it’s about planets, farts, emotions or even pirates, you’ll be amazed, astonished and intrigued as Julie and Phil don’t just answer your questions, they’ll set up experiments, speak to experts and take you down a rabbit hole to discover new things.

Parent info: Let's Dive In is recommended for ages 6-10 and 11 plus. It's an Episodic show that can be listened to in any order. Made in Ireland, it's about Science and Adventure for kids. Launched in 2020, it has 4 seasons.

There are 37 episodes

Episodes
The most recent appears first.

  • S4 Episode 5 – Woah Nelly! What’s your birthday?

    13 min Season 4 Episode 5 5 December 2025

    How do you tell a horses age? Phil and Julie discover how vets read teeth, hooks and wear patterns, and explore record-breaking long-lived animals in this fun, fact-packed episode.

  • S4 Episode 4 – What a spectacle! How do glasses help us see?

    13 min Season 4 Episode 4 28 November 2025

    How do glasses and contact lenses help us see? With help from real optometrists, Phil and Julie explore eye shapes, “pancake” lenses, and why natural light keeps vision healthy.

  • S4 Episode 3 - How so sleepy, Mr Hedgehog?

    11 min Season 4 Episode 3 19 November 2025

    How do hedgehogs survive months of hibernation? Collie Ennis tells Phil & Julie how heart rate, body temperature, and stored fat keep these tiny mammals alive all winter.

  • S4 Episode 2 – How come heavy trees can stay standing?

    11 min Season 4 Episode 2 14 November 2025

    How do massive trees stay upright? Nick from Redwood Trees talks about roots, pith wood, and flexible fibres let them sway in wind without falling.

  • S4 Episode 1 – How do engines work?

    9 min Season 4 Episode 1 12 November 2025

    Phil & Julie explain how car engines turn fuel into movement, from tiny explosions to electric motors, with fun, science, and plenty of laughs.

  • S3 Episode 10 - Telescopes in space

    16 min Season 3 Episode 10 9 February 2023

    Julie & Phil journey into space with Astronaut Bruce Melnick to find out how the biggest telescopes get up there, and why they’re up there in the first place.

  • S3 Episode 9 - What is blood and what is it good for?

    14 min Season 3 Episode 9 2 February 2023

    Dive into your blood with Julie and Phil and paediatrician Dr. Cilian Ó Maoldomhnaigh to find out how important it really is.

  • S3 Episode 8 - What happens if you fall into a Black Hole?

    13 min Season 3 Episode 8 26 January 2023

    Alan Foster joins Phil and Julie from Antarctica once more to explain what might happen if you fell into the gravitational pull of a dying star. Who likes spaghetti?

  • S3 Episode 7 – Why are insects so important?

    13 min Season 3 Episode 7 19 January 2023

    Julie and Phil join forces once more with Critter Shed bug expert Collie Ennis to find out why these tiny creatures are of such huge importance.

  • S3 Episode 6 – What happens if the sun explodes?

    13 min Season 3 Episode 6 12 January 2023

    10 year old Bobby asks a catastrophic question but Phil and Julie ask scientist Alan Foster for a detailed and somewhat reassuring answer. Because he’s just spent 9 months in Antarctica, 6 months of that without any sun.

  • S3 Episode 5 - How does a snail grow its shell?

    12 min Season 3 Episode 5 15 December 2022

    Julie and Phil join forces with Critter expert Collie Ennis to find out how snails grow their shells.

  • S3 Episode 4 - What are memories?

    11 min Season 3 Episode 4 8 December 2022

    Julie and Phil speak with memory expert Ciara Greene to find out where and how memories are made in the brain.

  • S3 Episode 3 - How many organs can you live without?

    10 min Season 3 Episode 3 1 December 2022

    Julie and Phil dive into the human body with Tissue Handling Technician Hannah McGivern to find out how many organs you can live without.

  • S3 Episode 2 - What time is it on the International Space Station?

    11 min Season 3 Episode 2 24 November 2022

    Julie and Phil welcome retired NASA astronaut Bruce Melnick back to the show to talk about the time in space.

  • S3 Episode 1 - Why do animals make noises and not talk like humans?

    12 min Season 3 Episode 1 17 November 2022

    Julie and Phil talk with Simon Watt to find out what noise-making kits different animals have.

  • We're back!

    51 sec 16 November 2022

    The podcast returns for Science Week 22 with 10 inspirational, investigational and altogether illuminating new episodes. Starts Thursday 17th November

  • S2 Episode 10 - What is science?

    23 min Season 2 Episode 10 11 November 2021

    Our bold presenters dive in to science itself! To explore what science and scientific research are with contributors from across the series.

  • S2 Episode 9 - What are contrails?

    18 min Season 2 Episode 9 4 November 2021

    Julie and Phil join Red Arrows pilot Nick Critchell to find out that jet planes have magical powers like Elsa from Frozen!

  • S2 Episode 8 - People Colours, and why don’t we have stripes?

    25 min Season 2 Episode 8 27 October 2021

    Why are we all different colours? And why aren't we stripy or spotty like the other animals? Julie and Phil dive in!

  • S2 Episode 7 – Are there different types of water?

    23 min Season 2 Episode 7 21 October 2021

    Barring earwax, for the first time Julie and Phil can actually dive into this topic with Phil’s Dad, Brian, to talk about how drinking water makes it to our taps. And a lot more splashy goodness.

  • S2 Episode 6 - Elbow deep in earwax

    22 min Season 2 Episode 6 14 October 2021

    Julie and Phil speak to two audiologists to find out what earwax is, what its for, and whether your ears sneeze in order to get it out!

  • S2 Episode 5 - How did the giraffe get such a long neck?

    23 min Season 2 Episode 5 7 October 2021

    To answer a question from 7 year old Ben, Julie and Phil speak to a real life Tarzan about giraffes and their long necks, and to zookeeper Tom about how to look after giraffes.

  • S2 Episode 4 - Why are there no wild snakes in Ireland?

    20 min Season 2 Episode 4 30 September 2021

    Julie and Phil meet Critter Shed Head Honcho Collie Ennis to find out why this tube-of-crisps shaped animal isn’t native to Ireland, and why it’s such a great predator.

  • S2 Episode 3 - Suncream in space with Astronaut Bruce Melnick

    29 min Season 2 Episode 3 23 September 2021

    Phil and Julie launch into space with a real live astronaut and a satellite engineer to find out if astronauts, and satellites, wear suncream up in space.

  • S2 Episode 2 - The fart should be respected

    25 min Season 2 Episode 2 16 September 2021

    Join Phil and Julie as they Dive In to your mouth and follow your dinner to see how it gets turned into farts!

  • S2 Episode 1 – Why do tadpoles blow bubbles?

    21 min Season 2 Episode 1 9 September 2021

    Julie and Phil are joined by Kurt Schwenk, a biologist at the University of Connecticut in the USA to dive in to find out how tadpoles breathe.

  • Episode 10 – Spiders!

    27 min Season 1 Episode 10 25 January 2021

    Alice and Florence caught a wolf spider in their house, and asked why do spiders have 8 eyes, and we only have two? Julie and Phil met Collie Ennis of the Critter Shed to find out.

  • Episode 9 – Why do leaves fall at different times?

    23 min Season 1 Episode 9 18 January 2021

    Nova asked a tricky question about trees so Phil and Julie find an expert arborist, Nick Rose who answers it and so much more. Plus, an experiment for you to do at home.

  • Episode 8 - Telescope

    18 min Season 1 Episode 8 11 January 2021

    How far can you see with a telescope? Julie and Phil are joined by Space Pirate Lana to find out.

  • 07 – Oh Christmas Tree!

    17 min Season 1 Episode 7 21 December 2020

    In a festive special, Phil and Julie meet an arborist who knows all there is to know about trees. And, in this particular episode, those green spiky ones we all have in our corners right now!

  • Episode Six - Why is the sea salty?

    27 min Season 1 Episode 6 14 December 2020

    Phil and Julie literally dive in to the Southern Ocean with oceanographer Nick up in Norway to find out.

  • Episode 5 - Walking on Jupiter

    18 min Season 1 Episode 5 7 December 2020

    Can you walk on Jupiter? Julie and Phil Dive right to the centre of the giant planet to find out.

  • Episode 4 - Heart pump

    22 min Season 1 Episode 4 30 November 2020

    Why does the heart pump? Phil and Julie take a trip into the heart to find out why and how it needs to keep beating.

  • Episode 3 - Colours

    16 min Season 1 Episode 3 23 November 2020

    Is black a colour, or is white? The kids can’t agree so Phil and Julie try different experiments with paints and lasers to find out!

  • Episode 2 - Explosions!

    23 min Season 1 Episode 2 16 November 2020

    How do scientists (and pirates) make explosions? Shipmates Julie and Phil are joined by a special guest as they make tiny rockets and slow burning fuses.

  • Episode 1 - Why do you talk?

    15 min Season 1 Episode 1 9 November 2020

    Julie and Phil have a fun-filled adventure into the larynx as they find out how we talk, but also why! Expect baby noises, cats and to make some silly sounds (and faces!).

  • Introducing... Let's Dive In

    55 sec Season 1 Trailer 2 November 2020

    Phil and Julie dive in to children’s questions about life, the universe and everything in it. Whether it’s about planets, farts, emotions or even pirates, you’ll be amazed, astonished and intrigued as they set up experiments, speak to experts and take you down…

Content, Artwork and advertising within this podcast is not owned or affiliated with Sound Carrot.

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