Dive into the Depths: Discover Prehistoric Ocean Predators with the family at WA Maritime Museum

By Marnie Adams, Contributor @ Kids In Perth 06 May 2023

WA Maritime Museum - Sea Monsters - 04052023 - img7
Play Video

Video/Photo Credit: WA Museum, Facebook/YouTube.

Are your little ones fascinated by creatures from the deep?
If so, you won't want to miss the exciting exhibition at the Western Australian Maritime Museum - "Sea Monsters: Prehistoric Ocean Predators".
Step into a world long gone and discover some of the most fearsome creatures that ever swam the oceans, from the infamous Megalodon to the massive Mosasaurus. Your kids will love learning about these amazing prehistoric predators and seeing their impressive fossils up close.
But it's not just about the exhibits - the Maritime Museum has plenty of interactive displays and activities for kids of all ages. From coloring stations to touch screens and interactive games, your little ones will be kept entertained and engaged.

Gallery | Sneak Peek!

Video/Photo Credit: WA Museum, Facebook/YouTube.

For an even more immersive experience, why not book a guided tour? Knowledgeable guides will take you and your family on a journey through the exhibition, providing fascinating insights into the world of these incredible creatures.
Don't miss out on this incredible opportunity to learn about fascinating creatures that once roamed our oceans.
Sea Monsters: Prehistoric Ocean Predators is on now at the Western Australian Maritime Museum.

For more information and tickets, check out visit.museum.wa.gov.au/maritime/sea-monsters-prehistoric-ocean-predators or find everything you need below to organise your family's next visit to the WA Maritime Museum!

Social Feed | Stay up to date

follow WA Maritime Museum

Competition Giveaway | Enter here

WA Maritime Museum - Sea Monsters - 04052023 - img7
Play Video

Video/Photo Credit: WA Museum, Facebook/YouTube.

More Content | Get the Kids Excited for Sea Monsters

Get the kids hyped with fun facts and information about these massive dinosaurs of the sea!

Seriously Scary Sea Monster Facts

WA Maritime Museum - Sea Monsters - 04052023 - img4
  1. Marine reptiles originally evolved on land and then went back to the sea.
  2. The biggest marine reptile was the 24-metre Shonisaurus, a type of ichthyosaur.
  3. Australia’s top plesiosaur predator, the Kronosaurus, had a bite force of 3 tonnes – more than a saltwater crocodile.
  4. The mosasaur Prognathodon’s head was so heavy; if it had lived on land, it couldn’t have lifted it.
  5. The first sea monster fossils were discovered about 50 years before we found any dinosaurs – we’ve known about them for around 250 years.
  6. Sea monsters ruled the oceans for over 180 million years (modern humans have only been around for about 300,000 years).
  7. Some ichthyosaurs could swim at speeds of 40 kilometres per hour.
  8. Some Australian sea monster fossils have become stunning and valuable opals.
  9. We can learn about what sea monsters ate by looking at their fossilised poo, called coprolites.
  10. The plesiosaur Albertonectes had 72 neck bones – more than any other animal. We have only seven.

Sea Monsters to check out!

Computer generated 3D illustration with the prehistoric mosasaur Tylosaurus


Fact Sheet

  • Lived 73-80 million years ago
  • One of the largest mosasaurs
  • Among the largest and most ferocious predators of any era
  • Grew to between 35 and 45 feet long
  • Eyes were as big as grapefruit
  • Had four rows of sharp, cone-shaped teeth to seize and crush prey, and could swallow prey whole
Computer generated 3D illustration with the prehistoric marine reptile Dolichorhynchops


Fact Sheet

  • Lived 80-90 million years ago
  • Name means “long snout”
  • Approximately the size of a dolphin
  • Fast swimmer that fed on fish and squid
  • Had no external ears, making it possibly deaf to airborne sounds
Extinct Cretaceous fish


Fact Sheet

  • Lived 70-95 million years ago
  • Largest bony fish of Late Cretaceous, reaching 20 feet long
  • Nicknamed the “bulldog” fish because of upwards thrust of jaw
  • Able to swallow prey up to half its length
  • Often fed on a 6-foot fish called a Gillicus
Styxosaurus dinosaur 3D illustration


Fact Sheet

  • Lived 80-85 million years ago
  • A member of the plesiosaurs
  • Its neck was 20 feet long — up to half its body length
  • Each of its flippers was the size of an adult human
  • Swallowed hundreds of small rocks to help grind up meals
WA Maritime Museum - Sea Monsters - 04052023 - img9

July School Holiday Program 

Visit any of WA Museum's various locations to take part in engaging school holiday activities!

There's always something new for children to learn and heaps of fun-filled activities for them to explore and express creativity.

Find information below about Drop and Leave programs for busy working parents.

With options available across Western Australia, there is something for everyone this school holiday season!

Book early to avoid disappointment.

WA Maritime Museum - Sea Monsters - 04052023 - img6

Sea Monsters: Torchlight Expedition

As the sun begins to set, and the lights go off, the creatures of the deep come to life in a special tour of Sea Monsters by torchlight.
Be guided by one of our museum educators on a journey back in time through the Sea Monsters - Prehistoric Ocean Predators exhibition. Explore gigantic ancient predators that once ruled the oceans. Follow the shapes and shadows of these amazing marine reptiles and discover what mysteries they reveal.

This intimate experience includes an opportunity to explore the exhibition with the lights on after the torchlight tour concludes.

Tuesday 4, Thursdays 6 & 13 July | 5.30pm and 5.45pm

Adult | $20
Concession | $17.50
Junior (5 - 15) | $15

Suitable for ages 6 - 12

1.5 hours

Arrive 15mins before session time for registration. Book early to avoid disappointment.


Sea Monsters After Dark - Luca (2021)

Get ready for an underwater themed night with the whole family! Journey back in time and explore Sea Monsters: Prehistoric Ocean Predators exhibition and then enjoy a heart-warming family-friendly film Luca.
See just how big some of these monsters really were by getting an up close and personal look at fascinating fossils, life sized casts and models as you uncover secrets of our oceans past.

Then, sink into comfy seats and enjoy a heart-warming family-friendly film 'Luca'. There will be popcorn and special prizes up for grabs! Disney and Pixar’s original feature film Luca is a story of a curious boy and his best friend who have a big secret! They're sea monsters from another world just below the water's surface. Holding on to this secret is difficult, especially when you live in a beautiful seaside town on the Italian Riviera, filled with gelato, pasta and endless scooter rides!

Come along with the family and enjoy a night of underwater entertainment and discovery.



Friday 14 July | 4pm - 8pm


Standard | $25
Concession | $20
Junior | $15

Classification rating: G
Duration: 1 hour 35 minutes

WA Maritime Museum - Sea Monsters - Meet The Scientist 28052023 - img1

Meet the Scientist

Join scientists from the WA Museum and beyond, with the opportunity to ask questions about some of the amazingly diverse marine animals found in WA waters.

Learn how the amazing stories from WA Museum's researchers illuminate our understanding of the fascinating and complex patterns of life that have evolved in the oceans.

Find out about the remains of prehistoric marine animals that palaeontologists have located in WA rocks, in landscapes that are far now removed from the ocean.

Understand how the biology of animals can tell us about their environment and habits, how predators and herbivores interact within marine food webs and how prehistoric animals either evolved or perished.



Tuesday 11 & Thursday 13 July | 11am – 1pm


Included with General Admission | Drop-in Activity
This event takes place in the foyer and gallery.

WA Maritime Museum - Sea Monsters - Drawing Monsters 28052023 - img1

Drawing Monsters

Take a journey into your imagination, as we explore the limitless possibilities of storytelling that great monsters can inspire.
Join a fun drawing workshop with visual storytelling artist Aśka where you will develop your skills at turning your loose monster ideas into imaginative artworks.

Aśka will share her know-how on how to develop the details, stories and sketching that will make your monster come to life on the page.

Learn about the techniques of great visual storytelling such as you find in your favourite comics and graphic novels. You will make and refine your own monster drawing as artwork to take home.


Friday 14 July | 9.30am – 12pm
Drop and leave program
Standard | $45 per participant
*Admission fees apply for WA Maritime Museum

Friend Members receive 15% off ticket pricing for this event.

Suitable for ages 9+

2.5 hours

Please arrive 15mins before session commences to complete participant registration and consent details.


Sea Monster Snowdomes

Go mad for sea monsters!
Inspire your child's inner mad scientist, and get creative as they make their own monster-in-a-bottle snowdome during school holidays using colourful modelling clay.

Design your own mini marine monster features, and have fun decorating the details of their floating world.

Fun, short workshop for those kids who love to get busy with their hands.


Friday 14 July | 9.30am – 12pm
Drop and leave program
Standard | $45 per participant
*Admission fees apply for WA Maritime Museum

Friend Members receive 15% off ticket pricing for this event.

Suitable for ages 9+

2.5 hours

Please arrive 15mins before session commences to complete participant registration and consent details.

WA Maritime Museum - Sea Monsters - Mega Monsters 28052023 - img1

Mega Monsters!

As sea monsters take over the Museum, drop in and stay for plenty of fun-filled activities around these fascinating creatures of the past!

  • Decorate your own mosasaur snapping skull to create a ‘jaw’-esome sea monster or a marine maze-monster – watch out for your hands!!
  • Discover the magnificent mega-mammals of the modern oceans, the whales. These gentle giants have impressively large bones and big hearts.

If you're an adventure enthusiast, prepare to embark on an exciting exploration as we offer a couple of fantastic journeys for you!

  • Learn about prehistoric marine reptiles through the Sea Monsters activity sheets.
  • Play hide-and-seek through the galleries with miniature LEGO® marine adventurers who are on the hunt for something big in The Maritime Monster Mystery trail.
  • Join their four junior palaeontologists on a video journey as they explore behind the scenes at the Museum to uncover the science behind finding fossils in WA.
  • Explore the ancient seas where prehistoric marine reptiles roam in a digital screen interactive, and discover which of these large animals have survived through to the modern day.

What are you waiting for? Dive into school holidays fun at the Museum!

WA Maritime Museum - Sea Monsters - 04052023 - img9

See these Sea Monsters at the WA Maritime Museum...

WA Maritime Museum Logo
WA Maritime Museum - Sea Monsters - 04052023 - img9
Play Video

Planner | Experience Wonderland

Seriously scary - not for the faint-hearted!

Millions of years ago, while dinosaurs ruled the land, giant reptiles more than 20 metres long hunted the depths of the sea – and they’re coming back to life at WA Maritime Museum.

Sea Monsters: Prehistoric Ocean Predators brings together real fossils from millions of years ago, gigantic life-sized casts from actual specimens, including a 13-metre long Elasmosaurus and nine-metre Prognathodon, immersive multimedia, and hands-on interactives to raise from the dead these ancient monsters of the deep.

The exhibition features over 70 exhibits and includes a huge 1.4-metre Kronosaurus jaw. There is also an incredible ichthyosaur specimen giving birth and a five-metre-long fish that died after swallowing another fish whole.

WA Maritime Museum - Sea Monsters - 04052023 - img8


WA Maritime Museum Victoria Quay Road, Fremantle




Standard | $15
Concession | $12.50
Junior (5 – 15) | $12.50
Junior (0 – 4) | Free
Family | $50


WAM Member logo

Join their Membership program to access 15 - 30% off discounted tickets for this exhibition.

Click on an icon to start planning your next WA Museum visit

Sea Monsters: Prehistoric Ocean Predators

WA Maritime Museum - Sea Monsters - 04052023 - img6

Get directions

follow WA Maritime Museum

Special Exhibition Events

WA Maritime Museum - Sea Monsters - 04052023 - img7

Sunday 7 May | 2pm – 3pm
Sunday 4 June | 2pm – 3pm
Sunday 11 June | 2pm – 3pm
Sunday 9 July | 2pm – 3pm

Sunday Seminars: Sea Monsters and beyond

Explore the world of the massive marine predators of the ancient seas, and how modern science understands these links to the past.


Daily | 10.30am & 2.30pm

Highlights Tour

Make the most of your visit to the Maritime Museum with a free tour of our galleries.

Amanda Elizabeth shark workshop hi res

Saturday 20 May | 10am  and 11am

Shark workshop for kids

Join marine biologist Amanda Elizabeth for an exciting workshop experience on sharks.

Date Night at WA Museum?


Saturday 13 May 2023 | 2.30pm - 4pm
Saturday 20 May 2023 | 2.30pm - 4pm
Saturday 27 May 2023 | 2.30pm - 4pm

Meditation for Life classes @ WA Museum Boola Bardip
A series of free classes exploring the road to inner peace and happiness.

iStock XXX-Neon-Sign-182795233_4229x2356
Saturday 24 June 2023 | 3pm - 4pm


Red Light Tour @ WA Museum Boola Bardip

Designed for our 18+ visitors, this is the raunchiest tour you can take at the Museum.

Membership | Connect with Your Museum

Sunday Animal Encounters @ WA Museum Boola Bardip

Membership Benefits

From ticket discounts to member-exclusive events and competitions... there are lots of benefits to being a WA Museum Member!

Start your membership by being a Follower, it's FREE!

Pre-sale access

Be first to know about special exhibitions & programs. 

Exclusive events & programs

Access to Members-Only events & programs.

Competition entry

Every time you book tickets or visit the Museum, you'll enter into a competition for an awesome grand prize!

FREE to join!

WA museum -Member-Logo
WA Maritime Museum - Sea Monsters - 04052023 - img5

Contact Details

WA Maritime Museum Logo

WA Maritime Museum

   1300 134 081



follow WA Maritime Museum

More from | Other WA Museum articles

More On | Family Weekend Ideas

Share This! Share this content on your Socials

for more ideas, push the red button.

Related Articles

CMS Events - 2024 City Feast - 05122023 - Competition Header v1 (1)

Discover Western Australia’s Wine and Gourmet Scene! | 2024 City Feast – Competition Giveaway

Ricochet Circus - 24122022 - img4

Choose Your Circus with Morgan James’ Circus Game Show at 2024 Fringe World Perth!

The Beyond Realms - 27112023 - img1

Enchanting Birthday Fantasies and Adventures Await at The Beyond Realms: Perth’s most Immersive Party Spot

The Beyond Realms - 11112023 - Competition Header v1 (1)

Discover Christmas Magic at Perth’s Imagination Wonderland | The Beyond Realms – Competition Giveaway