Kōrero: Ocean currents and tides

Algal bloom

Algal bloom

This orange algal bloom was photographed above Waipū Cove, Northland, in December 2002. Similar blooms closed shellfish beds in Auckland, Waikato and Taranaki. Some blooms are toxic, and anyone eating shellfish cultivated or gathered near a bloom risks poisoning. Algal blooms may be linked to changing sea temperatures, nutrients and sediments washing from the land into coastal waters, or to the nutrients in upwelling sea water.

Te whakamahi i tēnei tūemi

Private collection
Photograph by Miriam Godfrey

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

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Te tuhi tohutoro mō tēnei whārangi:

Craig Stevens and Stephen Chiswell, 'Ocean currents and tides - The ocean’s role in climate change', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/5935/algal-bloom (accessed 25 May 2022)

He kōrero nā Craig Stevens and Stephen Chiswell, i tāngia i te 12 Jun 2006