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Tuna sandwich trophic pyramid

This image is a diagram known as a trophic pyramid. This example shows the levels of an ecosystem that support the growth of tuna, which might be consumed by a human in a tuna sandwich. The diagram shows six levels in the 'pyramid' from phytoplankton through to humans, and visually depicts the size of the biomass at each ...

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Bryozoan skeletons in acidic solution

This is a colour photograph of two tubes, each containing bryozoan skeletons in acidic solution. The photograph depicts a scientific experiment investigating the effect of different pH levels on bryozoan skeletons. (Classification - Phylum: Bryozoa)

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Downloading data from animal tags

This is a colour photograph of a scientist in a laboratory using a laptop computer to download data from electronic animal tags. To the right of the computer is a specialised communication box into which the electronic tag is placed. The scientist in the image is Dr Miles Lamare, a marine biologist involved in sea star ...

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Harvesting New Zealand cockles

This is a colour photograph of two people collecting New Zealand cockles ('Austrovenus stutchburyi') in shallow sea water. The cockles are being dug by hand from a sand flat and placed into buckets. (Classification - Phylum: Mollusca; Class: Bivalvia; Order: Veneroida; Family Veneridae.)

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Marine scientists preparing to scuba dive

This is a colour photograph of a group of marine scientists preparing to scuba dive. The researchers are dressed in scuba diving gear including wetsuits, masks, fins and oxygen tanks. They are aboard a vessel in New Zealand's Fiordland.

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Common bottlenose dolphins, 'Tursiops truncatus'

This is a colour photograph of a small pod of common bottlenose dolphins ('Tursiops truncatus') swimming in the ocean. This photograph was taken in Fiordland, New Zealand, where a specialised group of common bottlenose dolphins live within the fiords. (Classification - Phylum: Chordata; Class: Mammalia; Order: Cetartiodactyla; ...

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Taking ocean samples

This is a colour photograph of marine scientist Dr Candida Savage taking samples from the ocean off Stewart Island, New Zealand. In the image, Dr Savage appears to be placing samples into microtubes and placing the microtubes into a microtube storage container. Dr Savage is sitting on a jetty by the ocean.

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'Slavery as it exists in America. Slavery as it exists in England', 1850

This is a black-and-white print showing two contrasting scenes of 'slavery' produced by J Haven of Boston, USA. The top scene shows African American slaves in the US southern states dancing and playing the banjo after their day's work is over. The bottom scene shows four episodes of people lamenting the 'slavery' of work ...

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'Jitterbugging in Negro juke joint', 1939

This is a black-and-white photograph showing African Americans at a roadside dance hall outside Clarksdale in Mississippi, USA, one Saturday evening in November 1939. Couples are jitterbugging to music from a jukebox while other people, mostly men, are standing around. The photograph was taken by Marion Post Wolcott.

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Map of ocean gyres

This is a colour map showing the Earth's main ocean gyres - mounded circular currents - and the Antarctic circumpolar current. Segments of each gyre are colour-coded to show cold and warm currents.

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Measuring photosynthesis

This is a colour underwater photograph of marine scientist Candida Savage using a scientific instrument known as the diving-PAM. The diving-PAM is being used to measure photosynthesis in corals in Fiji. Candida Savage is wearing full diving clothing and equipment including mask, wetsuit and oxygen tanks.

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Preserved colony of bryozoans

This image is a colour photograph of a preserved colony of bryozoans. Bryozoans are colonial carnivorous animals about 1 mm long and 0.25 mm wide that live in calcareous skeletons. The colony shown has a branching structure with many filament-like structures extending from the main branches, reminiscent of moss or coral.

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Marine scientist in the laboratory

This is a colour photograph of marine scientist Dr Miles Lamare. Dr Lamare is in his office at the Portobello Marine Laboratory at the University of Otago, New Zealand. On the desk behind Dr Lamare is the scientific equipment he uses to download data from electronic tags, which he attaches to sea stars.

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Thornhill plantation house, 2010

This is the two-storey Thornhill plantation house in Greene County, Alabama, showing the southern facade with its two-story portico of six Ionic columns across the front, and the eastern-side elevation. The photograph was taken by Carol Highsmith.

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'The abolition of the slave trade', 1792

This is a hand-coloured cartoon print showing an African girl being hoisted by the ankle for a flogging on board the British slaving vessel Recovery. The vessel's captain John Kimber is seen on the left, whip in hand. The cartoon was drawn by Isaac Cruikshank and published by S W Fores in London on 10 April 1792. The alternative ...

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'Effects of the Fugitive-Slave-Law', 1850

This is a black-and-white print showing four African Americans attacked in an ambush by six armed white men. One of the white men is firing as two others reload their guns, and two of the African Americans have been hit. The print is a denunciation of the Fugitive Slave Act of 1850, its effect reinforced by two quotations ...

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Second atomic bombing of Japan at Nagasaki, 1945

This is a black-and-white photograph showing the mushroom cloud rising from the explosion of an atomic bomb with an estimated force of 20,000 tonnes of TNT, 560 m above Nagasaki, Japan, on 9 August 1945. Part of the wing of the camera plane that accompanied the bomb-carrying plane can be seen at bottom right. The image ...

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'Washington, DC Government charwoman', 1942

This is a famous black-and-white anti-discrimination photograph, also widely known as 'American Gothic, Washington, DC'. It shows Mrs Ella Watson, an African American cleaner at the Treasury in Washington, USA. She is standing stiffly in front of the US flag, with a broom on one side and a mop on the other. The photograph ...

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Slaves using a cotton gin, 1869

This is a black-and-white illustration captioned 'The first cotton gin'. It shows how the US artist William L Sheppard imagined the scene of the first gin in operation, some 80 years after the actual event. Sheppard depicts two male slaves operating the machine with two white men examining the ginned cotton while female ...

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The mighty Aztecs

Who were the Mexihcah? Discover the rich and brutal history of the Aztec culture and the birth of Modern Mexico.