![]() If you're enjoying this article, we encourage you to also read our article on animals without a brain. In fact, they are 100 times more sensitive to light than the human eye. Benthos are the organisms that live in the benthic zone, and are different from those elsewhere in the water column even within the benthic zone variations in such factors as light penetration, temperature and salinity give rise to distinct differences, delineated vertically, in the groups of organisms supported. When it comes to fish that do have eyes, their eyesight is extremely sensitive. The benthic zone might not be brimming with vivid aquatic creatures, but many crustaceans, snails, sponges, sea stars etc. Abyssal fish with no eyes will need to rely on other senses in order to locate prey, mate and avoid predators. Eyes: some abyssal species have enormous eyes, while others don't have eyes at all.Others, have huge sharp teeth that don't fit in their mouth when closed. Area between high tide line and low tide line Organisms adapted to. Some species seem to be made up of merely a head and a large jaw. Typical benthic invertebrates include sea anemones, sponges, corals, sea stars, sea urchins, worms, bivalves, crabs, and many more. In fact, sometimes their prey are larger than them. The devlopment of their mouths and stomachs allow them to feed on larger prey. This is an adaption to the lack of food sources. In fact, many have larger mouths than their bodies. Mouth: Many abyssal fish species have extremely large mouths in comparison to their bodies.These fish also have a very soft and flexible body that allows them to float around the deep sea. Many abyssal fish have bioluminescence which allows them to produce light from their organism. This helps them blend into their environmental that is in perpetual darkness. Body: these fish don't have bright or flashy colors, many lack any color and seem to be transparent. ![]() Another reason for their weak bones is the fact that they cannot receive the nutrients and minerals, such as vitamin D or calcium, due to the lack of sun and the specific water components. This is because there are only weak currents in the abyss zone. Skeleton: abyssal fish have weak bones as they have no need for stronger bones. The hadal zone, sometimes called the ultra-abyssal zone, is largely restricted to the deep oceanic trenches.They feed on the detritus of another animal which lives. Benthos lives deep inside the sea where there is an absence of sunlight or aphotic zone. The organisms that live in this zone are known as benthos. The benthic zone is the lowest zone of the aquatic ecosystem like lake, river, ocean. As previously mentioned, these fish share certain characteristics that allow them to survive in the extreme conditions of the abyssal zone. The pelagic zone is present above the benthic zone.
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