Did you know that the ocean can be categorised into a series of layers?
The 3 main layers are designated based on the amount of light they receive, which decreases as ocean depths increase. These layers can be referred to as the Sunlight Zones, Twilight Zones, and Midnight Zones. The majority of life that we associate with the ocean is what exists in the Sunlight Zone— plants and animals that rely on sunlight to thrive. Below this zone, darkness prevents plants from growing, and the sea life that exists has very interesting adaptations to deal with extreme pressures and lack of light. Can you think of any creatures that might exist in these zones?
Download the resource below to help familiarise your students with the different ocean layers today!