00:11Jurassic Ocean's Monsters of the Deep takes you into the oceans of the Jurassic period so
00:16while we know that dinosaurs were dominant dominating on the land pterosaurs were swooping
00:21through the skies in the oceans there were these enormous marine reptiles lurking in the depths so
00:26while you think it might have been safer to dip your toe in the waters during the Jurassic
00:29that was not the case and this exhibition really uncovers what was lurking in the deep at that time
01:12so knowing that most people's touch points will be dinosaurs we kind of set the scene in the Jurassic
01:17what was the climate like what was the earth like so the big super continent of Pangaea was separating
01:23at this time and opening up lots of new marine corridors and this is one of the things that
01:28enabled these marine reptiles to really diversify in this period so there were lots of warm shallow
01:33areas of sea where reefs developed and that enabled an abundance of life to evolve and support these
01:50gigantic predators
02:03so there's a big diversity of life in the ecosystem during the Jurassic particularly the Jurassic
02:10and the Cretaceous and there's all different types of marine reptiles but many of them show convergent
02:18evolution so many of them have evolved flippers many of them have evolved smooth skins they could be
02:24more hydrodynamic there's probably several examples of different groups becoming warm-blooded being
02:32endothermic being able to generate their own body heat
02:52there's three main types we have ichthyosaurs that have these long streamlined skulls full of lots of teeth
02:59and have a dolphin-like body plan then there are the plesiosaurs that generally have very long necks
03:06and four flippers are unlike any animal group alive today because unlike turtles they use all four
03:14flippers in a coordinated fashion when they swim and they kind of fly through the water and we also have
03:20the mosasaurs which are giant animals related to lizards actually and they have these huge
03:29jaws with these hinges in them so they can open their mouths really widely and like long tails so
03:37they could move quickly and ambush their prey
03:58I think an appreciation of uh of large ocean predators so these are really exciting creatures that lived in the
04:06oceans in the jurassic but also thinking about our oceans today they're not just exciting
04:10because they're thrilling predators but they're also really important for ocean ecosystems and just getting
04:16people to think about the sharks and whales and crocodiles that we have today and their importance for keeping our
04:22planet healthy
04:23their world's most valuable information and the fish and whales and the sea
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