Crabeater Seals – Tomnod

Antarctica’s crabeater seals are the focus of an international study led by the University of Canterbury. The aim is to understand potential environmental and social impacts on one of the southern-most mammals in the world. To help the project, citizen scientists were asked to examine Maxar’s high-resolution satellite imagery and identify if seals are present or not. Read about some of the findings in Citizen science and habitat modelling facilitates conservation planning for crabeater seals in the Weddell Sea.

URL: www.tomnod.com (as this project has now finished this URL is no longer valid)

Reach: Worldwide

Nature of science focus: Online citizen science (OCS) projects can be used to develop any of the Nature of Science (NoS) substrands. Identify aspects of NoS that your students need to get better at or understand more fully and then frame your unit to be very clear about these things when you do them.

Science capability focus: Gather and interpret data

Science focus: Ecology

Some suggested science concepts:

• Scientists classify living things and group them according to their shared features.
• All animals occupy specific habitats and niches.
• All animals have adaptive features – structural (tapered bodies, blubber, large lungs), physiological (slowing heart rate when diving to conserve oxygen, large blood volume) or behavioural (basking in the Sun to warm up, creating breathing holes in the ice) – that enable them to survive.

Many concepts could be learned – focusing on a few can often be more powerful. Develop your learning outcomes and success criteria from these concepts as well as the Nature of Science strand and the science capabilities.

Some examples of learning outcomes:

Students can:

• observe closely to identify the presence of an animal species in satellite images
• describe an animal’s habitat and niche
• relate an animal’s structural or behavioural features to how an animal survives.

About Tomnod’s crabeater seal project

Crabeater seals live in the Southern Ocean surrounding Antarctica and are thought to be one of the most abundant mammals on Earth – but is this really true? Scientist Dr Michelle LaRue and her team are seeking your help to find this out!

These species are facing substantial conservation challenges in our changing physical and social environments. Analysing population dynamics can help us understand how these animals are dealing with these environmental changes and how the overall populations are being affected.

Dr Michelle LaRue

Participation in the project can be done using a computer to access Maxar’s high-resolution satellite imagery and identify if seals are present or not. The tutorial images are effective in training your eye to decide if what you see is indeed a seal or not.

The website is well set up and easy to follow. Additional information is available if required. After you have identified if seals are present or not, another photo/video appears. You can also ask questions about the image if you are unsure.

This OCS project lends itself to developing an appreciation for one of the Earth’s last wildernesses – our most southern environment – and its inhabitants, including the Weddell seal and the crabeater seal. It will also help develop students’ ability to carefully observe. Some useful conversations can be had around why scientists need assistance in categorising all of these photos/videos and how they make sure that the data collection is reliable.

What I love about this research is there are several impacts: democratising science, engaging people with the scientific method and empowering people to make a difference in the world.

Dr Michelle LaRue

Update

This citizen science project has now been completed, read about some of the findings in Citizen science and habitat modelling facilitates conservation planning for crabeater seals in the Weddell Sea.