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Under the Sea first birthday party ideas

Ocean blues and bubbles — lovely for a summer birthday or a party near water.

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Plan your Under the Sea party

Colour palette

  • Ocean
  • Seafoam
  • Coral
  • Sand

Cake ideas

  • Wave smash cake

    Blue and white frosting swirled into waves.

  • Fish cupcakes

    Cupcakes with a candy-melt fish on top.

Things to do at the party

Splashy water play

  • 6–36 months
  • 15 min
  • Indoors
  • Outdoors
  • Messy

Pouring and splashing with a few cups in shallow water.

  • Senses
  • Hands

You’ll need

  • Tub or bowl of water
  • Plastic cups
How to play
  1. Put a few centimetres of water in a tub or bowl.
  2. Add cups for pouring and scooping.
  3. Show how to fill and pour, then let them explore.

Play safely: Stay within arm’s reach around any water, and empty the tub straight after.

Bubble chase

  • 6–36 months
  • 10 min
  • Outdoors
  • Indoors
  • Low mess

Blow bubbles for your little one to watch, reach and pop.

  • Moving
  • Senses

You’ll need

  • Bubbles
How to play
  1. Blow a few bubbles above your baby.
  2. Let them reach, clap or chase.
  3. Count the pops together.

Play safely: Keep the bubble mix out of reach.

Plan your Under the Sea party