Glossary

Page 4 of 10 pages ‹ First  < 2 3 4 5 6 >  Last ›

Embryo
young of an organism at its very early stages of development
Endangered
plant or animal whose prospects for survival and reproduction are in immediate jeopardy
Endemic
native to a specific area, habitat, or region
Endoskeleton
internal skeleton, like the bony or cartilaginous skeletons of vertebrates
Envenomation
to sting or impregnate an organism with a toxin by means of a stinger, spine, barb, bite or poisonous tissue
Environment
sum of biological and non-biological factors to which an organism, population or community is subjected
Enzyme
a protein molecule produced by living organisms that causes a cehmical reaction to take place at a faster rate or under different conditions without itself being destroyed or altered upon completion of the reaction
Ephyra
immature medusae
Epibenthic
living on the seabed
Erosion
loss of soil due to water flow, especially in areas where native vegetation has been removed
Estivate
state of dormancy induced by high temperature; breathing and circulation slows slightly
Estrus
period of sexual receptivity in most female mammals during which mating and conception occur
Estuary
area where fresh water in the form of streams or rivers influenced by oceanic tides empties into the ocean or a coastal bay, usually forming a salt marsh
Ethology
study of animal behavior
Excluder
a plant with the ability to exclude salt from tissues, example, salty Susan
Excretor
plant able to excrete salt from their tissues. example, sea lavender
Exoskeleton
external skeleton, like the "shell" of a crab or lobster. Usually made of keratin.
Extinct
no longer in existence
Fast ice














sea ice that has frozen along coasts and is attached to it or to the sea floor over shallow parts of the continental shelf, and extends out from land intothe ocean waters. Usually melts when temperatures rise in the summer.






Fauna
animal life of a region, special environment
Feces
excrement
Fecund
fertile or capable of producing many offspring
Feduncity
capacity, especially in female organisms, of producing eggs, sperm, or offspring in great numbers
Feral
individuals of a domesticated species that have returned to a wild state
Festoon
string
Filamentous
chainlike series of cells as in many algae
Filaments
fine or threadlike structures
Filter feeder
animal that eats by passing surrounding water through a filtering device and filtering or straining out small particles of food
Fission
form of asexual reproduction in which the parent organism divides into two or more parts, each becoming an independent individual
Float
gas containing structure found on the stem of large kelp that buoys up the plant; pneumatophore or pneumatocyst
Flora
plant life of a region, special environment, or period of history
Flukes
two lobes of a cetacean or dugong's tail
Flyway
route followed by migrating birds. There are four major north to south routes in the US.
Food chain
progression of feeding levels in which one organism is the food source for the next level
Food web
description of the interactions or complex relationships between various food levels
Forage
food for animals, especially when taken by browsing or grazing; to search for food
Fossil
hardened remains or traces of plant or animal life of a past geological period; usually preserved in rock
Fouling
mass of living and non-living bodies and particles attached to a submerged object
Frond
leaf-like structure of a plant: kelp stipe (stem-like part) and the attached blades
Fry
fish that have completed yolk absorption and are less than a few months old
Fusiform
spindle or torpedo shaped; rounded, broadest in the middle and tapering toward each end


Gamete
mature sperm or egg, capable of fusing during fertilization
Gametophyte
gamete-forming phase in alteration of plant generations
Gastropod
mollusks of the class Gastropoda, such as snails, slugs, cowries, or limpets, characteristically having a single, usually coiled shell or no shell at all, a ventral muscular foot for locomotion, and eyes and feelers located on a distinct head
Generic
relating to or determined by the origin, development, or causal antecedents of something
Genus
subdivision of a biological family: biological ranking between family and species
Gestation
period during which young are carried in the uterus
Gill
aquatic respiratory organ
Gill net
a fishing net set vertically in the water so that fish swimming into it are entangled by the gills in its mesh
Gill raker
modified dermal denticles that are projections on the inner margin of the gill arches that point forward and upward and act as a sieve by straining water preventing food particles from entering the gills