Jurassic Oceans: Monsters of the Deep – A New Exhibition at London’s Natural History Museum
The Natural History Museum in London has opened a new temporary exhibition titled Jurassic Oceans: Monsters of the Deep, inviting visitors to travel back roughly 200 million years to a time when gigantic marine reptiles dominated the world’s seas. The show combines rare fossil specimens with up‑to‑date scientific interpretation, offering a vivid picture of life beneath the waves during the Jurassic period.
Exploring the Ancient Marine Realm
While dinosaurs roamed the continents and pterosaurs ruled the skies, the oceans were inhabited by formidable predators such as ichthyosaurs, plesiosaurs, and marine crocodilians. The exhibition emphasizes how these reptiles evolved streamlined bodies, powerful limbs, and specialised feeding strategies to thrive in a marine environment that was, in many ways, as ecologically complex as today’s oceans.
Key Fossils on Display
- A remarkably preserved ichthyosaur skull measuring over 1.2 metres in length, showcasing the elongated snout and conical teeth adapted for catching fish and squid.
- A partial skeleton of a giant plesiosaur estimated to have reached up to 12 metres from snout to tail, featuring the characteristic long neck and four large, paddle‑like limbs.
- Additional specimens include fossilised ammonites, belemnites, and a rare marine crocodile (Metriorhynchus) that illustrate the diversity of Jurassic marine ecosystems.
These objects are drawn from the museum’s own collections and from partner institutions, with each specimen accompanied by detailed provenance information and dating based on stratigraphic and radiometric analyses.
Insights from Experts
Kate Whittington, Senior Curator of Vertebrate Palaeontology at the Natural History Museum, explains that the exhibition “aims to show how marine reptiles filled ecological niches similar to those occupied by modern whales and seals, despite evolving entirely separately.”
Dr. Marc E. H. Jones, a palaeontologist specialising in marine reptile locomotion, describes the plesiosaur’s anatomy: “Its long neck acted like a rudder, while the four wing‑like fins enabled a unique underwater ‘flight’—a motion more akin to underwater gliding than the typical swimming of fish.” He notes that, although fully aquatic, plesiosaurs needed to surface regularly to breathe air, a trait shared with today’s marine mammals.
Lessons for Today’s Oceans
Beyond showcasing prehistoric life, the exhibition draws explicit parallels between past environmental upheavals and current challenges. Researchers point to evidence that volcanic activity, sea‑level fluctuations, and changes in ocean chemistry contributed to mass extinctions at the end of the Triassic and during the Jurassic. The museum’s accompanying panel cites a 2022 study in Nature Geoscience linking rapid carbon release to oceanic anoxia events that devastated marine life.
The display warns that modern oceans are experiencing comparable stressors: rising sea temperatures, ocean acidification, and deoxygenation driven by anthropogenic carbon emissions. By highlighting these connections, the exhibition seeks to foster public awareness of how deep‑time insights can inform contemporary conservation strategies.
Visitors to Jurassic Oceans: Monsters of the Deep will leave with a clearer understanding of Jurassic marine ecosystems, the scientific methods used to reconstruct them, and the relevance of ancient extinctions to the pressing issue of climate change today.


