Y5/6 Theme: Ocean Explorers 26.02.21

Mission 2: UK marine habitats with Dr Helen Findlay


Our second mission is based on developing your understanding that the ocean is not a giant bathtub nor swimming pool, but is composed of different habitats like we have on land.


In this session, you will learn about the five major marine habitats around the UK and the different conditions in each one.


In the next theme session, you will investigate the different types of marine life that live in each of the habitats you will learn about today.





Marine Habitats:

There are five main marine habitats: the shore, shallow sea, the sea floor, the deep ocean and the open ocean. The shore is where the land meets the sea; next is the shallow sea above the shelf where the water is still not very deep. Away from the land, the top 200 metres of the sea is the open ocean and the bottom is called the deep ocean. The sea floor is the ground at the bottom of the sea.


The conditions in the habitats are all different. In the open ocean there is lots of light, but there is no sea floor, so the living things there always have to float and swim. In the deep ocean lots of strange creatures live in permanently dark and cold conditions where the pressure is very high. Shallows seas are lighter and warmer than the deep ocean (although it wouldn’t feel warm to us!). Lots of plants and animals live here as there is more food. On the shore there is lots of light, but the shore is different to the rest of the habitats because it is not always wet.


The sea moves on and off the shore, which is called the tide. This means the plants and animals that live there are sometimes in the wet sea, and sometimes on dry land. Finally, as you travel along the sea floor from the shore to the open ocean, the deeper you go, the darker it gets, and the higher the pressure is.


Work through the different ‘learning checkpoints’ on the slides and answer the questions as you go, then move onto the activity:


- Slides

- Activity (Marine habitats and life poster – you can either use this template or create your own)

- Clue cards



Use these key words to help you when creating your poster…







PLEASE KEEP ALL OF THE WORK YOU DO IN THEME AS YOU WILL BE STICKING IT IN YOUR THEME BOOK ONCE YOU ARE BACK IN SCHOOL!