Under the Sea Pajamas


My little one is fascinating : he wants to be an ichthyologist* and wants to switch from playing the violin to playing the electrical guitar...

Instead... I designed this print for him: all different fish and sea creatures are happily listening to a large blue musical octopus, playing a double-neck electric guitar... Blue whale and sea-horses are dancing around

All the sea creatures are in many shades of turquoise and light blue.

Luxuriously soft, 100% Peruvian Pima Cotton.

This print also exists in a short summer version...

I learn from my little one that Ichthyology, also known as fish science, is the branch of zoology devoted to the study of fish.

Question about sizing? Please do not hesitate to contact us via Instagram DM or email us: customerservice@petidoux.com  reach out to us on our live-chat

  • MTV's video :"Hotel California" with Don Felder playing his double-neck electric guitar.
  • "20,000 leagues under the sea", the fiction book from French author Jules Verne. [published in 1870, original title "Vingt-mille lieux sous les mers"]
  • Musee de la Marine, Trocadero, Paris.
  • Natural History Museum, New York City.
  • Commandant Jacques-Yves Cousteau [1910-1997] and his famous Calypso ship.
  • Pantone Blue Atoll: 16-4535TPX
  • Ichthyology, aka fish science and includes bony fish, cartilaginous fish and jawless fish.
  • Water-based print,
  • Petidoux's own exclusive design
  • Manufactured in Peru.
  • Ultra-soft 100% interlock Peruvian Pima cotton 50/1.
  • No flame-retardant. No chemicals.
  • Pre-washed & pre-shrunk .
  • No pilling, even after many, many washes
  • Machine washable
  • Tumble dry low
  • Conforms to CFR 1615/1616. Comfortable snug fit (we would advise to size up when ordering)

For child's safety, garment should fit snugly. This garment is not flame resistant. Loose-fitting garment is more likely to catch fire.

Size chart
Age Height Weight Body Measurements (in)

In lbs Chest width Top Length Pants length Waist

(A) (B) (C) (D)
1 28-29 20-21 10 13.5 18.3 9.5
2 35-37 23-24 10.25 14.5 19.6 10
3 38-40 25-27 10.5 15.5 21.2 10.25
4 41-43 28-31 11 16.5 22.4 10.5
5 44-46 32-36 11.5 17 23.6 10.75
6 47-49 37-42 12 17.5 24.8 11
8 47-49 43-47 13 18.8 26.3 11.7
10 50-54 48-53 14 19.6 27.5 12.2
12 55-59
15 20.6 28.7 12.7

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Customer Reviews
5.0 Based on 3 Reviews
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I recommend this product
So soft!

My 5 year old daughters absolutely LOVE these pajamas! (note: they are above average in height, so I ordered size 7 and they fit perfectly) The pj's are super soft, wash and wear well, and have a fun, timeless print.

Caitlin D.
Love these!

Charming interesting pattern - highest quality, soft cotton.

Luiann G.
Under the sea

Great print and I love the fabrication sooo soft cotton. I do prefer the front button placket .... I am a big fan of your pj's ...wish you made them for me.....xxoo