Oceans: The Abyss

In the ocean abyss – the deepest of all aquatic ecosystems – life is rare. But a few well-adapted creatures do survive in the most inhospitable habitat on Earth. Biology - Ecosystems - Learning Points. The abyssopelagic zone (or the abyss) begins 4000m below sea level and is the most inhospitable habitat of the planet. Animal life is rare in the abyss, but through adaptation and scavenging whole ecosystems are able to survive. The mid-ocean ranges are the largest mountain range on Earth – found far beneath the sea in the zone called the abyss. A series of colossal trenches exist under the ocean, the largest of these is the Mariana Trench at 11km deep. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.