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Corporation: Investors and Media: Cyanotech Corporation Guerrant Associates Jeffrey H. Sakamoto Laura Guerrant (808) 326-1353 (808) 882-1467 jsakamoto@cyanotech.com lguerrant@guerrantir.co

Key Takeaway: Contacts: Corporation: Investors and Media: Cyanotech Corporation Guerrant Associates Jeffrey H. Sakamoto Laura Guerrant (808) 326-1353 (808) 882-1467 jsakamoto@cyanotech.com lguerrant@guerrantir.com CYANOTECH CORPORATION ANNOUNCES DEPARTURE OF SCIENTIFIC DIRECTOR KAILUA K

Full Press Release Details

Contacts: Corporation: Investors and Media:
Cyanotech Corporation Guerrant Associates
Jeffrey H. Sakamoto Laura Guerrant
(808) 326-1353 (808) 882-1467
jsakamoto@cyanotech.com lguerrant@guerrantir.com
CYANOTECH CORPORATION ANNOUNCES DEPARTURE
OF SCIENTIFIC DIRECTOR
KAILUA KONA, Hawaii. December 30, 2004
Cyanotech Corporation (Nasdaq: CYAN), a world leader in producing high-value
natural products from microalgae, today announced the departure of its Scientific
Director, John E. Dore, Ph.D., effective December 31, 2004. Dr. Dore is leaving his position to pursue
other opportunities in research, but will maintain a month-to-month consulting
relationship with the Company during the course of the next six months.
Cyanotech Corporation, a
world leader in microalgal technology, produces high-value natural products
from microalgae and is the world s largest commercial producer of natural
astaxanthin (pronounced asta-zan-thin ) from microalgae. Products include BioAstin natural
astaxanthin, a powerful antioxidant with expanding applications as a human
nutraceutical; NatuRose natural astaxanthin for the aquaculture and animal
feed industries; Spirulina Pacifica , a nutrient-rich dietary supplement; and
phycobiliproteins, which are fluorescent pigments used in the immunological
diagnostics market. Spirulina Pacifica
and BioAstin are sold directly online through the Company s website,
www.nutrex-hawaii.com, as well as through resellers in over 30 countries
worldwide. Technical information for the
Company s phycobiliproteins products is available at www.phycobiliprotein.com.
Corporate data and other product information are available at

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

for statements of historical fact, the statements in this press release are
forward-looking. Such statements are
subject to a number of risks and uncertainties that could cause actual results
to differ materially from the statements made.
These factors include, but are not limited to, general economic
conditions, forecasts of sales in future periods, changes in sales levels to
our largest customers, weather patterns, risks associated with the acceptance
of new products, competition, foreign exchange fluctuations, government
regulation, and other factors more fully detailed in the Company s recent Form
10-Q and annual form 10-K filings with the Securities and Exchange Commission.
Last updated: Dec 30, 2004