SCIENCE
Deep Sea Mystery: The Colossal Squid's First Live Encounter
South Sandwich IslandsWed Apr 16 2025
The colossal squid, a giant among invertebrates, has finally been seen alive in its natural habitat. This is a big deal because it's the first time in a century that scientists have spotted one swimming freely in the deep sea. The squid, known as Mesonychoteuthis hamiltoni, can grow up to 23 feet long and weigh as much as a small car. The one caught on camera was just a baby, measuring only 11. 8 inches.
Scientists from around the world were on a mission to find new marine life. They were on a research vessel called the Falkor. The team used a remote-operated vehicle named SuBastian to explore the deep sea near the South Sandwich Islands. The video shows a nearly transparent juvenile squid with eight arms swimming in the dark waters.
Before this, the colossal squid was only known from dead specimens found in the stomachs of whales and seabirds. Or sometimes, fishermen would find dying adults in their nets. But seeing one alive and in its natural environment is a whole new level of discovery.
The squid has a unique feature: sharp hooks on the ends of its tentacles. This sets it apart from other glass squid species. The team had to wait for days to confirm what they had seen. It was a humbling moment for the scientists, knowing that these creatures have no idea humans exist.
The expedition was a team effort. It involved the Schmidt Ocean Institute, the Nippon Foundation-Nekton Ocean Census, and GoSouth. This project is a joint effort between the University of Plymouth, the Geomar Helmholtz Centre for Ocean Research, and the British Antarctic Survey.
This year marks a century since the colossal squid was first identified and named. The deep sea is full of mysteries. Every new discovery reminds us how much more there is to learn about the ocean and its inhabitants.
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questions
How does the size of the juvenile colossal squid compare to previous observations of adult specimens?
What new insights might the footage of the juvenile colossal squid provide about its behavior and habitat?
If the colossal squid had a chance to interact with humans, would it prefer a friendly wave or a tentacle high-five?
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