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Cover of Peek Through Nature: Sea
Picture · ages 3–6

Peek Through Nature: Sea

Written by Patricia Hegarty · Illustrated by Britta Teckentrup

Book 5 of 7 in Peek Through NatureView the full series

Beneath the waves, a whole world is alive. Teckentrup's underwater illustrations are among the most gorgeous in the series, Sea takes the Peek Through format into deep water, with die-cut pages that reveal what's hidden in coral reefs and kelp forests.

  • Best for3–6
  • FormatPicture
  • Length32 pp
  • Read aloud~6 min
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The vibe

What it’s like.

Style

  • Rhyming
  • Lyrical
  • Repetitive

Tone

  • Warm
  • Gentle
  • Whimsical
  • Adventurous
  • Inspirational

Themes

On the pageocean, sea, underwater world, marine life, sea creature

Experience meters

Energy3/ 5
Humour1/ 5
Scariness1/ 5
Peril1/ 5
Wonder5/ 5
Cosiness3/ 5
Emotional intensity1/ 5
Conceptual intensity2/ 5

What’s it about?

The story.

From the sunlit shallows to the deep ocean floor, Patricia Hegarty's rhyming text guides readers through the layers of the sea, the darting fish near the surface, the swaying sea anemones, the secret world of the coral reef, and the creatures of the deep. Britta Teckentrup's illustrations bring the underwater world to life with her characteristic rich colour and detail, and the series' die-cut pages let readers peek through wave-shapes and bubble-holes to discover what lies below. Sea is among the most visually adventurous entries in the Peek Through Nature series, the translucent quality of the water illustrations is particularly beautiful, with light filtering through in a way that makes the underwater world feel genuinely otherworldly. A strong choice for children who are fascinated by the sea, marine life, or ocean animals, and a natural pairing with Bugs and Bee for children working through the more science-focused entries in the series.

Fit check

Right for your child?

Where it lands by age

  • 1
  • 3
  • 5
  • 7
  • 9
  • 11
  • 13
  • Best fit · 3–6
  • Read aloud · 2–6
  • Independent · 5–7

Prose load

Light

Visual support

Very high

Reluctant-reader friendly

Workable

Read-aloud quality

Excellent

Works well for

  • Reading aloud
  • Reading together
Low sensitivityNo content warnings

Nothing in the book is likely to concern most parents. Safe to recommend without preview.

Bedtime suitability

3 / 5 · Workable

Sensitive-child

4 / 5 · Good fit

Graphic intensity

1 / 5 · None

Best for

  • Nature and wildlife
  • Ocean and sea
  • Educational fun
  • Gift book
  • Animal lovers

Avoid if

No common reasons to avoid this one — a rare clean sweep on the sensitivity flags.

Particularly good for children who are…

  • Interested in science
  • Interested in art and creativity

In the classroom

How it works in school.

Rhyming peek-through nature books — a lovely read-aloud companion for early science and nature topics.

Classroom role

  • Topic companion
  • Read aloud
  • Poetry and performance

Good for teaching

  • Vocabulary

A book children love that happens to support school — never a stand-in for the texts a class is taught with. Reviewed for the classroom · June 2026.

Why it lands

Why they love it.

Why kids love it

The specific delight is the descent — sunlit shallows down to the deep, fish and anemones and coral reef and creatures of the dark, die-cuts shaped like waves and bubbles letting you peek beneath each layer. The Peek Through Nature for the ocean-obsessed.

  • Animal companions
  • Adventure and freedom
  • Secret world

Why parents love it

The Hegarty / Teckentrup Sea — translucent underwater illustration with light filtering through, layer-by-layer ocean structure, most visually adventurous entry in the series. Natural pairing with Bugs and Bee for the science-leaning household.

  • Beautiful illustrations
  • Educational for adult too
  • Bedtime appropriate
  • Conversation starter

In the series

Peek Through Nature.

7 books · open the series →

About the creators

About the creators.

PH

Patricia Hegarty

Writer · United Kingdom

Patricia Hegarty is a British children's-book author known for her work on the Peek Through Nature series (Tree, Bee, Bugs, Moon, Sea, Home, Family), gentle, rhyming non-fiction picture books illustrated in textured printmaking by Britta Teckentrup, with peek-through die-cut pages that reveal seasonal or natural-world changes spread by spread. Hegarty's writing is rhythmic, calm and well-pitched for bedtime read-aloud, with non-fiction content carried lightly inside the verse. She has also written a number of other picture books and board books. A reliable nature-and-bedtime author for ages 1–5, especially for families who value slower, art-led picture books.

More from Patricia Hegarty
BT

Britta Teckentrup

Illustrator · Germany · b. 1969

Britta Teckentrup is a German illustrator born in Hamburg in 1969, who lives and works in Berlin, and whose distinctive textured-print picture books have become a fixture of the gift-shelf and gentle-bedtime end of UK and German children's publishing. Best known for the Peek-Through series (with Patricia Hegarty as writer on the UK editions: Tree, Bee, Bugs, Moon, Sea, Home, Family) and her own author-illustrated titles (The Memory Tree, Bee, The Egg). Her style uses textured layering, woodcut-inflected printmaking and quiet observational composition, closer to mid-century European nature illustration than to contemporary cartoon picture books. A reliable bedtime, nature-and-feelings author for ages 2–6.

More from Britta Teckentrup

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Come into this from…

Easier or preparing reads — perfect lead-ins.

Where to go next…

Escalation reads — a step up in scale, silliness, or stakes.

Where you’ll find it

On these reading lists.

Buy or borrow

Pick up a copy.

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Last reviewed · April 2026Suggest a correctionHow we recommend

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