Zones
Is there sunlight in the twilight zone?
Yes
Can photosynthetic producers be found in the Twilight Zone?
Yes
What is the production and emission of light by living organisms called?
Bioluminescence
What are three uses of bioluminescence?
Communication, Offense, Defense, Finding a mate
What two abiotic factors are the biggest concern when exploring the deep sea?
pressure and depth
What depth can the twilight zone be found?
200-1000m
Due to the lack of food, animals in the Twilight Zone are typically what size?
small
What are organisms that live on the ocean floor called?
Benthos
What are the two types of hydrothermal vents called?
Black Smokers & White Smokers
What do scientists use to explore the deep sea?
ROV's, HOV's, AUV's
What is the first color to be absorbed as the depth of the ocean increases?
Red
What percentage of food makes it way to the Twilight Zone from the Sunlight Zone?
20%
Fish in the Twilight Zone typically have what kind of mouth and jaws?
Large mouths with hinged jaws
Primary producers in the deep sea use a process called what to make their energy?
Chemosynthesis
What does ROV stand for?
Remotely operated vehicle
The Midnight zone has no sunlight, this is considered a ______ zone.
aphotic
What percentage of food makes it way to the Midnight Zone from the upper zones?
5%
What is it called when fishes in the mesopelagic swim up at night to feed in the rich surface layers and descend back to the depths during the day?
Vertical Migration
While most benthic animals are small, some of these deep sea animals exhibit what?
Gigantism
What was discovered in 1977 by Geologists using an ROV to look for the Titanic?
Hydrothermal Vents
The midnight zone consists of what three ocean zones?
Bathyal, abyssal and hadal
What are the two most common sources of food in the Midnight Zone?
Marine Snow & Whale falls
What are the light organs, or specialized structures, that produce light called?
photophores
Animals that feed on marine snow are considered what?
Deposit feeders
Scientists believe that no fish can live below what depth?
8,200 m