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The Hawaiian bobtail squid and its resident bacterium, Vibrio fischeri, have a powerful and still somewhat mysterious symbiotic relationship. The luminescent bacteria populate a small pouch on the squid’s underside called the light organ, and provide a sort of “Klingon cloaking device.” They produce light at night to offset the squid’s shadow and hide it from predators when it approaches the ocean’s surface to feed. At the University of Wisconsin-Madison, microbiologist Margaret McFall-Ngai studies this unusual relationship. An understanding of these creatures’ rhythms could lead to new ways to treat disease. She is also studying how the squid and bacteria communicate, so they don’t harm each other.
(Source: DCMP)
One of the most famous dioramas at the American Museum of Natural History depicts a battle between two gigantic animals: the sperm whale and giant squid. But unlike most dioramas in the museum’s halls, this scene has never been witnessed. Paleontologists Neil Landman and John Flynn explain how scientists know that these two creatures do encounter one another.
When the nerve cells of squid suffer an injury, something unexpected happens with the tiny pouches of colored pigment, called chromatophores. A MIT scientist discusses this phenomenon, and how it can be used and modeled on the computer with some surprisingly simple rules. Part of the "Science Out Loud" series.
The bobtail squid is no bigger than a walnut and is a tasty mouthful for predators in the coastal waters of Hawaii. However, the species continues to thrive in these waters in part because of its symbiotic relationship with a bioluminescent bacteria, which renders the squid virtually invisible to predators. Part of the "I Contain Multitudes" series.
Getting a giant squid from New Zealand to New York is no easy feat. Curator Neil Landman tells the tale of a sizable specimen’s journey to the collections at the American Museum of Natural History, and Curator Mark Siddall explains why this giant cephalopod has a new name. Part of the "Shelf Life" series.
Part of "The Living Oceans" series. Reveals the habits and behavior of night-spawning coral, manta rays, lobsters, white-tipped sharks, cuttlefish, Humboldt squid, and opalescent squid. Shows the mysteries of ocean ecology in the annual spawning of coral, the molting of lobsters, the feeding habits of sharks and cuttlefish, and the deadly attacks of squid. Captures the death of thousands of opalescent squid as they lay their eggs, and then die in vast numbers.
Bioluminescence is a chemical process that allows living things to produce light. On land, fireflies are one of the most visible users of bioluminescence. In the ocean, bioluminescent creatures can be found from the surface all the way down to the deep sea floor. Scientists are still trying to figure out why and how animals adapted this feature.
How do mollusks move? Close-up photography reveals the locomotion secrets of snails, sea hares, scallops, octopi, and squids.
Part of "The Living Oceans" series. Captures the ecological balance established between animals and plants on a Caribbean coral reef. Details the symbiotic and commensally symbiotic relationships along with the predator/prey relationship.
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Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
