DDT was banned in 1972 in North America , but is still widely used in China, and many developing countries. Toxicological effects DDT has been linked to reproductive failure in mammals, and to decreased reproductive fitness of may birds. DDT has been furthur linked to tumour promotion in some organisms. Click here to learn more about the contaminants that we have tested for. Click here to learn about contaminant analysis .
Blue whales are the largest mammal ever known to have lived on Earth.
They average 23 to 32 metres in length and usually weigh between 80 and 130 metric tonnes. The head of a blue whale comprises about one quarter of its length. As its name suggests, the blue whale is generally blue-gray in colour, although it may appear mottled with light gray or white patches. On its underside it is lightly coloured and has many pleated grooves. Blue whales have been found that are older than 100 years.