48 terms

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Several sets of terms found in Marine Science.
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Caudal Fin
tail fin used to propel the fish forward
Dorsal Fin
fin(s) located on the top body used to keep the animal from rolling and make sharp turns.
Anal Fin
a fin located below the caudal fin used to stabilize the fish; not found on mammals or sharks
Pectoral Fins
located in the front of the fish, used for steering
Gill Cover
Found in bony fish only, a scaly cover located right behind the eyes.
pelvic fin
a pair of fins found on the front stomach side of the fish, used to stabilize the fish
lateral line
a sensory organ on a fish that sense changes in water pressure and movement, the lateral line can be seen where the color changes from light to dark in some fish
Water pressure
pressure that increases with depth
Current
a steady flow (usually from natural causes)
Amount of salt in the ocean
Salinity
Tide
The rise and fall of the sea level.
Wavelength
The diffrence between crests of a wave.
Trough
Valley between two waves
Deepest trench
Mariana Trench
abiotic
a non-living (physical or chemical) component of the environment, Any nonliving component of an environment
abyssal zone
the bottom from a depth of approximately 4,000 m to 6,000 m
autotroph
an organism that manufactures its own organic matter by using energy from the sun or other sources
benthos
organisms that live on the bottom
biotic
a living component of the environment
carnivore
an animal that eats other animals
chitons
mollusks that have a shell divided into eight overlapping plates
cleaning associations
a symbiotic association in which a smaller partner regularly removes parasites from fishes
coevolution
the process in which one species evolves in response to another
commensalism
the type of symbiosis in which one species obtains shelter, food, or other benefits without affecting the other, or host
community
the populations that live and interact in an area
interspecific competition
competition among members of different species
nekton
organisms that swim strongly enough to move against the current
nudibranchs (sea slugs)
gastropods that lack a shell and have exposed gills
phytoplankton
the photosynthetic component of plankton consisting primarily of single-celled algae and bacteria
plankton
organisms that drift in the water
predation
the act of an animal, or predator, eating another organism, or prey; a top predator is one that feeds at the top of the food chain
sessile
an organism that lives attached to the bottom or to a surface
zooplankton
plankton consisting of small animals and the immature stages of larger animals
Intertidal
The shallow zone of the ocean where land meets water, which is alternately covered or exposed by the tied
Abyssal Hill
A hill on the slope of a mid-ocean ridge about 100m high and lineated parallel to the ridge crest, formed by faulting of the basaltic oceanic crust as it moves out of the rift valley
Abyssal Plain
very level area of the deep-ocean floor, usually lying at the foot of the continental rise
Sea Cave
formed as wave action hollows out the cliff
Sea Arch
Formed when sea caves on either side of a headland join.
Sea Stack
column of rock remaining after the collapse of a sea arch
Beach
an area of sand sloping down to the water of a sea or lake
Lagoon
shallow body of water or lake near a sea; lake separated from a sea by sandbars or coral reefs
Tombolo
a ridge of sand that connects an island to the mainland or to another island
Temperature
the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)
Salinity
a measure of the amount of dissolved salts and other solids in a given amount of liquid
Currents
water that moves in a certain direction; the river like flow of water in the oceans
Sonar
a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return
Big-belly, or Pot-bellied seahorses
R.O.V.
(n.) a tiny submersible that goes into the deep without people to take pictures and movies