Researchers are expanding wearables to cover underwater creatures with new wearable sensors to help track whale sharks and dolphins. The crab you see here is one of the first test organisms for the new lightweight sensor to track animal movements in the deep sea environment.
This sensor is called "marine skin" and is designed to stick to the animal's outer shell or skin. It is said that in water, the weight of the sensor is approximately equal to the paper clip. The lightweight design allows the sensor to be worn by a variety of large and small marine animals without damaging their body or underwater behavior.
The label was developed by King Abdullah University of Science and Technology in Saudi Arabia, and scientists behind the label expect to have as many as 200 different marine species by the summer of 2019. The new label is non-invasive and the old model label must be injected or attached to the animal using other invasive methods.
These tags are equipped with a small button battery that lasts for one year. Scientists say prototype labels can continuously track seawater salinity, temperature and depth. In the prototype, the battery can last for five months without any optimization or data recording frequency changes.
The electronic components of the label are mainly made of copper, tungsten and aluminum, and silicone is used as the main body of the skin. The material and processing cost per sensor is less than $12. The current prototype needs to be connected to a smartphone via Bluetooth to transmit data, which is why the prototype is suitable for sharks in an aquarium in Spain. Second-generation sensors hope to transmit data over the air.
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