The Mesopelagic
This phenomenon marks the bottom extent of the mesopelagic zone.
What is the farthest that light can penetrate?
This kind of eye provides very accurate long-range vision despite the relative lack of light.
What is a tubular eye?
While to us a fecal pellet is something that should be flushed away (immediately), to a benthic organism it is this.
What is something to eat? What is food?
The name of the Kingdom that contains one-celled organisms and algae.
What is Kingdom Protista?
The name of the smallest of the microplankton.
What are picoplankton?
The mesopelagic zone contains this drastic temperature division.
What is the thermocline?
These structures, which sense vibrations, are extra sensitive in many mesopelagic fishes.
What are lateral lines?
Skeletal remains on the sea floor are turned into food by these.
What are bacteria?
The name of the smallest of the four major oceans.
What is the Arctic Ocean?
The keystone species in maintaining a kelp forest.
What are otters?
The mesopelagic zone "sits" on this zone.
What is the bathypelagic?
As a rule, the inhabitants of the lower mesopelagic tend to be one of these three colors.
What is red, silver or black?
In the total darkness, some kinds of bacteria can make their own food using this process.
What is chemosynthesis?
The definition of a limiting resource.
What is a factor required by a population to grow, but present in small quantities in an ecosystem?
That category of organisms that live buried in sand or mud.
What are the infauna?
Although there is some light in the mesopelagic zone, there is not enough for this process.
What is photosynthesis?
"Counterillumination" is a good strategy to avoid being eaten but it requires these structures.
What are photophores?
While most abiotic characteristics in the deep sea are fairly constant, this one increases precipitously with depth.
What is pressure?
Between sea urchins, sea otters, sharks and kelp, the organism at the top of the ecological pyramid.
What are sharks?
What an area near the shore that is always underwater is called.
What is "subtidal," or what is the continental shelf community?
Although ostracods are in Phylum Arthropoda, they are often mistakenly assumed to be from this phylum.
What is Phylum Mollusca (clams, squid, octopuses)?
A major difference between bioluminescence and sunlight is this.
What is the fact that bioluminescence is cool rather than warm?
The very bottom zone of the deep sea is this one.
What is the Hadal?
The organisms responsible for the White Cliffs of Dover in the UK.
What are foraminiferans?
The symbiotic partner of sea anemones.
What are clownfish (Nemo)?