An area in which fresh water from a river mixes
with salt water from the ocean; a transition area
from the land to the ocean. Other names: bay,
sound, lagoon, harbor, or bayou.
fresh and salt
Very nutrient rich ecosystems leads to
high productivity and high biodiversity.
Fast-moving rivers and waves carry
Sediment settles out in the estuary when
the water slows down.
Nutrients accumulates on the bottom
Great place for plants to grow!
Plants must be adapted to salty habitat
glasswort – a succulent
Huge variety including…
Blue crab, Stone crab, Fiddler crab,
Horseshoe crab, Mosquito, Lobster,
Flounder, Stripped bass, Crane,
Flamingo, Sea gull, Ibis, Manatee,
otters, and many more.
A low area that is subject to regular, but gentle,
tides, dominated by grasses.
Salt marshes do not have trees or shrubs
Texas salt marsh
located in tropical
by salt-tolerant trees
and shrubs, such as
Also called rocky intertidal zone – many places to
live in this habitat, means high biodiversity
Organisms must be adapted to wave action,
changing tide levels
At low tides, there are often tide pools left
behind where you can see starfish,
anemones, crabs, octopus
Sandy shores or beaches are loose deposits of
sand, gravel or shells that cover the shoreline
in many places. They make up two-thirds of the
world’s ice-free coastlines.
A long, narrow, offshore
island, usually having
beaches and dunes on
the seaward side,often
with lagoons on the
Structures in the shallow oceans that are built
by animals called corals; serve as a habitat for
many diverse organisms
Require two things: warm temperatures and
Found between 30°N and 30°S of the equator
There are many different kinds of corals: