Algae
A group of plants that in spite of their appearance do not have
true root, stems, or leaves.
Generally found in water, such as seaweed.

Anguilla
North Atlantic eel

Autotrophic
An organism that through photh- or chemosynthesis produces
its own nutrition: it is a primarey
producer.

Alongshore current
A current, parallel to the shore, transporting the water
accumulated by the incoming waves as they
break on the shore.

Anaerobic
Living on the absence of free oxygen, which most organisms
meed for respiration.

Arenicola
Common beach annelid.

Astrorhiza
Territorial benthic foraminifera.

Anthozoans
Cnidarians belonging to the class Anthozoa; the corals and sea
anemones.

Analogy
Correspondence in function but not in origin; (for example, the
wing of a bee and the wing of
a hummingbied).

Alginates
A group of compounds derived from brown algae and used as
thickeners in foods and other
products.

Agar
Acompound derived from red algae and uaed among other
thing to grow bacteria ina lab
envirnment.

Amoebocyte
A cell whose function is to carru food, waste, reproductive
products, etc., within the sponge
tissue from one place to another cy migrating through the
mesenchyme.

Anthozoa
Corals and aemones belong to this class.

Autotomy
The ability to cast off a part of the body when in danger; the
part can usually be regenerated;
for example, the claw of a crab.

Aristotle's lantern
Common term used to describe the way the teeth are
assembled in most sea urchins.

Asteroidea
Class containing the sea stars.

Aboral end
The end of the animal away from the mouth.

Anadromous
Fish that lay eggs in fresh water and mature in salt water,
such as the salmon.

Agnatha
class containing lampreys and hagfish.

Aphotic zone
Aera beneath the dysphsphoticzone where there is no
measurable light from the sun.

Abyssopelagic zone
the area from 4,000 meters to 6000 meters deep.