The sex of tuna is not determined genetically, as in some other organisms.

New Zealand faces a variety of hazards associated with undersea geological activity.

Methane (CH4) is the second most important greenhouse gas after CO2 that is produced by human activities.

Links to related resources and websites

Find out more about free floating species.

The coldest seawater on earth could help scientists understand why Antarctic sea ice is growing in a warming world

The 3-panel Soil Moisture Deficit (SMD) map shows the historical soil moisture deficit at the date shown (left), the soil moisture deficit at the same time last year (middle) and the current soil moisture deficit (right).

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The New Zealand Palaeotsunami Database (Database) brings together all known information about tsunamis that occurred prior to written records.

Downloadable and printable guides on identification of common freshwater invertebrates found in New Zealand waterways and lakes.

Antarctica is experiencing stunning skyscapes like those recently seen in New Zealand, thanks to the afterglow effect from the Tongan volcano.