prehistoric planet 2 oceans recap

Prehistoric Planet 2 was shown of 5 days in May 2023, and we take a look at each episode, and on this page we look at the Oceans episode. to highlight some of the events and prehistoric animals you can see within it. Not all of these will be dinosaurs as although they were still the dominant life on the planet at the time, there were plenty more animals walking, swimming and flying around!

With the narration of the renowned David Attenborough, the CGI that would not look out of place in a Jurassic World movie and with the unique approach to present it in a modern day nature documentary version it looks to be as excellent as the first series last year.

You can watch the episodes this week on this link for apple TV.

If you want a full list with some information about each animal in the whole series of Prehistoric Planet 2 you can check out this page where we cover each episode and the animals / reptiles / dinosaurs and more in more detail.

Episode 1: Islands | Episode 2: Badlands | Episode 3: Swamps | Episode 4: Oceans | Episode 5: North America

Just before you Jump In we have a table listing the animals that appeared in Prehistoric Planet episode 4 below.

Table 1: Animals in Prehistoric Planet 2 episode 4

AnimalMaximum SizeWeightHabitatClassification
Mosasaurus13-17 metres (43-56 feet)55,00 – 10,000 kg (12-22,000 lbs)OceanMarine Reptile
Phosphorosaurus3 metres (9-10 feet) UnknownOcean (Japan, Belgium)Marine reptile
Lantern fish2-30 cm (1 inch to 1 foot) wide rangeOceanFish
Hesperornis1.8 metres (5.8 feet) longwide range of estimates (10 to 90kg) more likely lower. North American oceans / RussiaBird like dinosaur
Xiphactinus4-6 metres (14-20 feet200-450 kg ( 500 -1000 lbs.) OceansFish
AmmonoideaWIDE range! few mm to 1.8 metreshuge rangeAll oceans / EuropeMollusk
Pyroraptor2+ metres (6 to 7 feet)20 kg ( 44 lbs.) France / SpainDinosaur
Tuarangisaurus8 metres (26 feet)1,000 kg (2200lbs.)oceanMarine reptile
Baculites 7 cm to 2 metres (2.8 inches to 6.6 feetWide rangeoceanmollusk
Diplomoceras1.5 metres (5.5 feet) Wide RangeoceanMollusk
Morturneria5 metres ( 16 feet) Antarctic oceanmarine Dinosaur

Prehistoric Planet 2: Episode 4: Oceans Recap

Here we take a look at the third episode in the series titled Oceans which explores the oceans of the world as they were 66 million years ago and revisits some old favorites from prehistoric planet the first season, like Mosasaurus and the Elasmosaurus, but also takes a look at new types of animal like Ammonoidea( mollusks)

In this Prehistoric Planet Episode we are shown how different animal species may have interacted and lived in the largest of all the earths environments – The Oceans

Prehistoric Planet 2: Oceans : Asia

We are shown a nesting ground for an unnamed pterosaur, although as it is likely set in what is now Mongolia / Uzbekistan it may be a newly, and very Very partially discovered Pterosaur – currently nicknamed the Mongol Giant.

Prehistoric Planet 2: Episode 2: swamps Recap Mongol giant

Although the pterosaurs in Episode 3 of prehistoric planet 2 are babies, they would have grown to have a wingspan of over 30 feet. ( they were in the same family as Quetzalcoatlus and Hatzegopteryx) so need to move on from the small swampy islands.

Prehistoric Planet 2: Episode 2: swamps Recap Shamosuchus

While they do, and as we have seen in similar episodes, being young in the prehistoric world comes with plenty of risks. for the baby Pterosaurs that risk first comes in the form of a prehistoric crocodile Shamosuchus, quite a few of them.

Prehistoric Planet 2: Oceans : Mongolia

the show then transports us to Argentina, or what is now Argentina, and we are looking at a fresh water fish, a Gar ( but probably not a garfish as its called as that lived in the oceans) It is being watched by a Piscivore dinosaur called Austroraptor, which was a medium sized member of the raptor with cone shaped teeth.

Prehistoric Planet 2: Episode 2: swamps Recap

It shows how difficult it is for younger animals to mark their place in the world, and is this instance it is a juvenile Austroraptor trying to find a fishing spot.

Although there is a battle, which the young Autroraptor doesn’t win!, the juvenile does eventually get its meal!

Prehistoric Planet 2: Oceans : Madagascar

On the return to Madagascar we see Masiakasaurus again, this time running face to face into a Beelzebufo frog / toad who is trying to get to swampy ground to attract mates.

Nobu Tamura (, CC BY 3.0, via Wikimedia Commons

however, big as he is there is always a bigger fish animal, and in this case it is a herd of Rapetosaurus who also are after the muddy environment, although to take mud baths and not attract a mate.

The frog, while much smaller is able to scare the much larger Rapetosaurus, and if you think this is unrealistic have a think about your, or most peoples reaction, when they see a spider or a cockroach.

Editorial credit: Conchi Martinez /

Prehistoric Planet 2: Oceans : North America

We now move to look at a herd of Pachycephalosaur who are rutting and butting heads to defeat other males and to impressive females, it also looks at the more recent studies that the Pachycephalosaurus may have been an Omnivore instead of a herbivore – especially when it was younger. We have more here on this.

Pachycephalosaurus dinosaur with spikes on its head

Staying in North America we get a look at some grazing Edmontosaurus and triceratops peacefully eating.

Although they are being watched by a pair of Tyrannosaurs Rex who don’t want to take the triceratops on in the day time at least and with the Edmontosaurus being so close decide to bide their time.

So we are shown a night scene with the T-Rex hunting the Edmontosaurus, successfully, and suggesting that T-Rex did hunt in packs ( more here) to tackle large dinosaurs at least. the hunt also shows how intelligent they may have been as pack hunters, with distraction and coordination being demonstrated.

Then we close out the episode and move on to the oceans environment in the next episode.

You can check out The Prehistoric Planet Episode 4: oceans recap and other recaps here on the site as well.

Episode 1: Islands | Episode 2: Badlands | Episode 3: Swamps | Episode 4: Oceans | Episode 5: North America


While the swamps of the Late Cretaceous certainly had more food for the life that lived there, there were also plenty of risks, whether that was from hungry Crocodiles or from Angry Frogs there was always something ready to take a bite from animals who called the swamps their homes.


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