So, where do these incredible microscopic phytoplankton live?... AND how do they move around the ocean?
Imagine that the ocean is like a giant house with lots of different levels. 🏘️The roof on it is about the same height as the Cliffs of Moher in County Clare. At its tallest point it is about 200m high – that’s equivalent to 133 twelve year-olds with an average height (1.5m) – standing on each others shoulders.
The ocean is divided into layers, like this big house. Starting with the ☀️Sunlight Zone☀️ at the very top, this is the only part of the ocean where sunlight shines through, like a skylight in the ocean's roof. Below this, the ocean quickly gets dark. Most of the ocean is a place where no sunlight ever reaches! Imagine 💭
Below this is the Twilight Zone (200-1,000 metres deep) and then the completely dark Midnight Zone (1,000-4,000 metres deep).
Further down are the deepest parts of the ocean: the Abyssal Zone (4,000-6,000 metres deep) and the deepest of all, the Hadal Zone (6,000 – 11,000 metres to the seafloor), found in deep ocean trenches.
Phytoplankton need the sunlight!
Since they need sunlight to survive, phytoplankton live in the sunlight zone. Phytoplankton come in all shapes and sizes, and they have clever ways of living in the sunlight zone. We can think of them in two groups: "floaters" and "stickers.“ Thousands of marine animals from these deeper, darker zones make the largest animal migration on Earth every single night, traveling up to the Sunlight Zone to feast on the abundant plankton.
Learn more about our ocean's microscopic marvels! 🔬Check out our amazing free to download resources from the
explorers.ie!
bit.ly/48aZpVs
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