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Benthic organisms live at the bottom of various water bodies, in deep areas and in the littoral zone.
They can live in different environmental conditions because they occupy different niches.
The littoral zone is home to a greater diversity and abundance of benthic organisms that are present in deeper areas.
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When the water warms up in the spring, insect larvae begin their metamorphosis. They start to emerge in late April. Dense clouds of mayflies can sometimes be observed, especially towards the end of the day.
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Mayfly larvae move quickly, and can climb up plants.
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Many caddisfly larvae move around without leaving the case they have built. The case doesn’t stop them from moving at a high speed.
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Aquatic gastropods have eyes at the bottom of their tentacles, unlike terrestrial gastropods (snails) that carry them at the end of their tentacles.
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Bloodworms swim by twisting their bodies. They support themselves on prolegs located at the front of the thorax and the end of the abdomen.
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Hemipterans in the family Notonectidae have long legs that allow them to swim well.
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Hemipterans in the family Belostomatidae are rather large, measuring between 20 and 60 mm in length. Their strong front legs are used to catch and hold prey.
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Isopods move rapidly along the lake bottom.
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Amphipods use their front legs to cling to the substrate, hold food and aerate the gills at the base of their legs. Their back legs are used for locomotion.
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