Coral - September/October 2011

Technical terms that
appear in articles in this issue lexicon |

bio-piracy: biological theft; the taking of
plants or animals from a country or indig-
enous entity without permission and without
compensation to the owners.
cryptic: in animal behavior, using camouflage
and/or hiding tactics to avoid predators.
cyanide: in fishing, the illegal spraying of so-
dium cyanide underwater to stun reef fishes
and allow their easy collection for food or the
aquarium trade.
CRI: abbreviation for Color Rendition Index.
color temperature: description of the color
of light comparing the color to that of a
standard black body at a certain tempera-
ture and expressed in K (Kelvin). Natural
daylight ranges from 5,000 to 6,500K.
Color Rendition Index: a measure of the
accuracy of a light source of a given color in
creating the colors of an object being lit. A
rating of 100 is perfect; ratings above 80 are
considered good.
diode: an electrical device that allows
electricity to flow in one direction, similar to
a check valve in plumbing. LEDs are similar
to diodes.
heat sinking: in LED lights, the diffusion of
heat away from the emitters, often by con-
vection using an aluminum “heat sink.”

LED: light emitting diode.
LED driver: a device to that converts AC cur-
rent to DC and regulates current flow through
an LED; analogous to a ballast.
lm/W: lumens per watt or luminous efficacy;
a measure of the light output efficiency of a
light bulb or other light-emitting device.
luminous efficacy: a measure of the ef-
ficency of a white-light source in converting
energy in watts to lumens.
photon: a basic unit of light energy or other
form of electromagnetic radiation.

red/orange light: energy released as pho-
tons in the 650nm–700nm wavelength range.
sea spider: a marine arthropod of the class
Pycnogonida, not true spiders. No venomous
species are known.
VIBGYOR: Colors of the rainbow in wave-
length order: Violet, Indigo, Blue, Green,
Yellow, Orange, Red.
visible light: energy released as photons in
the 400nm–450nm wavelength range.
white light: light composed of a wide spec-
trum of colors in combination.

REEF LIFE page 128

Tulamben, Bali, Indonesia

A pair of Panda or Philippine Butterflyfish, Chaetodon
adiergastos, hover above a Pacific Giant Barrel Sponge,
Xestospongia testitudinaria. This sponge grows to more
than 39 in. ( 1 m) in height and can live for centuries.
Giant Barrel sponges are sometimes called “Redwoods
of the Sea.”
—Image by Denise Nielsen Tackett, co-author, with Larry
Tackett, of REEF LIFE, Natural History and Behaviors
of Marine Fishes and Invertebrates (Microcosm/TFH,
2002).

Seven reasons why you should use ReVive Coral Cleaner™

Catalaphyllia jardinei
Fungia sp.

Blastomussa wellsi
Acanthastrea lordhowensis
Caulastrea furcata
Acropora sp.

ReVive Coral Cleaner™ is a new type of coral dip solution for live stony corals. Its formula is based on powerful plant extracts, but it isn’t harsh on coral tissues the way iodine-based dips are. For coral dipping prior to acclimation to aquariums, for rinsing prior to shipping, and for dipping newly fragmented corals, such as at coral farming facilities.