Tag: ROVs

Mission: Save the Reef

As part of their Earth Science studies, sixth grade students have been exploring how pests and invasive species impact ecosystems. One focus has been the Crown-of-Thorns (COT) sea star, a species currently threatening the Great Barrier Reef. Students learned how the sea star’s rapid reproduction and lack of natural predators have led to significant damage in this delicate ecosystem. By feeding on coral, COTs are contributing to the reef’s decline at an alarming rate.

To better understand real-world solutions, students investigated how scientists are responding to this challenge. They explored using Remotely Operated Vehicles (ROVs) to identify and inject vinegar into sea stars, a method that effectively eliminates them. These ROVs can operate continuously and in a variety of ocean conditions, making them a powerful tool for conservation efforts.

Bringing this learning to life, students worked collaboratively to design and build their own ROVs. Teams engineered frames, installed motors, learned to operate control systems, and added creative design features as they stepped into the roles of engineers and marine scientists.

On Tuesday, students put their designs to the test at the MCC Augusta Pool. Their challenge was to navigate their ROVs underwater and retrieve imitation Crown-of-Thorns sea stars, simulating the work of marine conservation teams on the Great Barrier Reef.

Students spent the first part of the session learning to maneuver their ROVs and coordinate as teams. Once they became comfortable operating the controls, teachers released the imitation COT sea stars into the pool for retrieval.

Armed with creative retrieval tools such as shovels, Velcro, and scoops, teams worked together to collect the sea stars from the bottom of the pool. By the end of the challenge, the class had successfully retrieved a record 38 Crown-of-Thorns sea stars.

This hands-on experience allowed students the opportunity to fully engage in the engineering design process while tackling a real-world environmental issue. Through collaboration, problem-solving, and innovation, students saw firsthand how science and technology can be used to protect ecosystems and make a meaningful impact on the world around them.

#SaklanHandsOn

Taking on Invasive Species

As part of the sixth-grade earth science curriculum, the students learned about how pests and invasive species can affect an ecosystem. One species they focused on was the Crown of Thorns (COT) sea star. They learned how the sea star’s fast reproduction and limited predators on the Great Barrier Reef are creating quite a problem for that precious ecosystem. The COTs eat the algae in the coral, which is causing the coral to die at rapid rates. Students then learned how scientists are using Remote Operated Vehicles (ROVs) to learn to identify and inject vinegar into the COTs. The vinegar dissolves them from the inside out. These ROVs can work 24 hours a day in all kinds of weather conditions. 

Ms. O had the 6th-grade students team up to create their own ROVs. With a grant from National Geographic Education, the students were able to use SeaMate Angelfish ROVs to simulate the work of the scientists out on the reef. The students had to design a frame, add motors, learn how to work their control box, and decorate their ROV.

With the ROVs completed, the students were given the challenge of collecting COT’s from the local MCC Augusta Pool. Students had to figure out how to maneuver their ROV and remove the imitation COTs from the pool.

It was amazing to see the engineering and design process happening while the students took the role of scientists. 

#SaklanHandsOn