Humpback whales are renowned for their spectacular breaching displays. Leaping clear of the water, breaches can be interpreted as defensive, inquisitive or even playful behaviour.

We measure ocean mixing with a Vertical Microstructure Profiler (VMP), also affectionately known as the “toilet brush”. 

During voyage IN2019_V03 we have deployed 14 weather buoys in the south-east Indian Ocean for the Australian Bureau of Meteorology and the American National Oceanic and Atmospheric Administration.

The Western Australian Marine Science Institution’s Dredging Science Node has been shortlisted for WA's Environmental Excellence awards.

First celebrated in 1992, World Oceans Day was officially recognized by the United Nations in 2008. Globally it is important to celebrate the vital role the oceans play, particularly in the light of current threats.

One station per day is what we could achieve to capture the physical, chemical and biological information we need to understand the major changes since the 1960s.

Oceans really are a microbial soup with just one litre of seawater containing 30,000–40,000 different types of microbes.

The Continuous Plankton Recorder (CPR) is unusual in the context of a modern day science voyage, as the technology has remained virtually unchanged since 1927.

A key descriptor of marine ecosystems is a particle size distribution, which is expressed as the number of particles or volume of particles in the water column.

By listening to the sea with sonobuoys from RV Investigator, we are documenting the migration of pygmy blue whales while they migrate from their austral summer/spring feeding areas off Victoria and the Perth Canyon, Western Australia to warmer Indonesian waters for the austral autumn/winter.

The natural mysteries of the Kimberley, one of Australia's last pristine habitats, have been documented like never before thanks to a multi-million-dollar project.

Direct measurements of phytoplankton growth and grazing by micro- and mesozooplankton are one way to look at variability in trophic structure in our study region. 

If you have heard the old fisherman’s adage that “big bait catches big fish”, you may intuitively understand how ocean food webs operate...

Every year in the contemporary ocean, phytoplankton use energy from the sun to take up carbon, nutrients and trace elements, and to transform it into a staggering amount of about 50 billion tons of organic matter. This is referred to as the oceanic net primary production (NPP).

The Microbial Cell Sorting and Imaging or Micro-CSI is a mobile laboratory belonging to the University of Technology Sydney (UTS) is being used on board RV Investigator.