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  • Arthropods

    • Video
    Crab in the water. Caption: They also have a hard, external skeleton

    Arthropods have jointed limbs, hard exoskeletons, segmented bodies, and molt--or shed--their shells in order to grow. Crabs, beetles, centipedes, squillas, pill bugs, and walking sticks demonstrate a variety of ways some of the one million different species of arthropods walk.

    (Source: DCMP)

  • Small insect on the tip of a leaf. Caption: Ticks are parasites of birds and mammals.

    Part of the "Branches on the Tree of Life" series. Phylum Arthropoda is the most luxuriant branch on the tree of life. Covers phylum characteristics and three major arthropod classes: Crustaceans (copepods, waterfleas, branchiopods, decapods, and barnacles), Chelicerates (scorpions, pseudoscorpions, spiders, ticks, and mites), and Uniramians (centipedes, millipedes, and insects). Focuses on adaptations, life cycles, and evolutionary relationships in each section.

    (Source: DCMP)

  • Close up of a cockroach head and body. Caption: A bunch of 'em -- American cockroaches.

    This program explores how arthropod biodiversity helps humans. Insects are both producers and decomposers, and these functions are essential to the health of the planet. Part of the "Backyard Bugs & Other Arthropods" series.

    (Source: DCMP)

  • Hand holding a magnifying glass pointing to something on the ground. Caption: Do you see it?

    This episode describes the characteristics of five species: the ant lion, the mantis, the walking stick, the Luna moth, and the hickory horned devil (regal moth larva). It highlights insect life processes such as metamorphosis, molting, reproduction, physiology, camouflage, and predator-prey relationships. Part of the "Backyard Bugs & Other Arthropods" series.

    (Source: DCMP)

  • Spider with long narrow legs and a small narrow body at the center of a delicate spider web. Caption: Spiders are arachnids.

    This episode focuses on the adaptations of arachnids and insects. Spiders inhabit backyards that design and build intricate silk webs. They have also developed numerous adaptations that make them efficient predators. Backyards also have insects living above and below the water's surface. More amazing adaptations are introduced including incomplete metamorphosis, eye development, and remarkable breathing apparatus. Part of the "Backyard Bugs & Other Arthropods" series.

    (Source: DCMP)

  • A butterfly with its wing spread out and sitting on a flower.

    Arthropod are the most abundant and diverse group of animals in the world. They inhabit every continent and every ocean, and they outnumber all other animal groups combined. This episode investigates what arthropods are, where they come from, and how they have succeeded through genetic mutation, diversity, exploitation, and coevolution. Part of the "Nature's Microworlds: Insect Specials" series.

    (Source: DCMP)

  • Crab with red legs and a darker body. Caption: Most of the year, the red crabs live in their burrows inland.

    Christmas Island, discovered December 25, 1643, is just a spec of land in the Indian Ocean. The annual red crab migration at the beginning of the rainy season, however, is so massive it can be seen from the air. It has been named a wonder of the natural world. Follows this terrestrial arthropod from its rainforest burrow, across dangerous landscape to the ocean to mate.

    (Source: DCMP)

  • Daphnia

    • Video
    Extreme closeup of the cell structure showing the translucent outline of the heart. Caption: Daphnia's heart keeps its circulatory fluid in motion.

    Part of the "The Biology Classics" series. Daphnia are small, planktonic crustaceans. Provides a classic study in arthropod behavior and anatomy. Examines the eye, brain, jaws, intestine, legs (with gills), and heart. Identifies two kinds of eggs: those that hatch directly into female daphnia and resistant eggs that carry the species through periods of freezing and drying.

    (Source: DCMP)

  • A sand covered horseshoe crab. Caption: ARTHROPODS That means they have an exoskeleton,

    How do horseshoe crabs keep humans healthy? They have blue, copper-based blood, which quickly clots in the presence of bacterial toxins. Medical researchers use it to test intravenous drugs, vaccines, and medical devices, ensuring that they are free of bacterial contamination. Part of "The Remarkable Horseshoe Crab" series.

    (Source: DCMP)

  • The head of a horse wearing a bridle, hooked to a tether secured to a post. The horse is leaning down to eat hay. Caption: These are all examples of different kinds of animals.

    Explores the fascinating features of the animal kingdom. The taxonomy of the different invertebrate and vertebrate phyla are the focus of the program, with special emphasis placed on the evolutionary relationships of the various phyla. Each of the major phyla are discussed, going from simple to more complex organisms. Other terminology includes: sponges, cnidarians, flatworms, roundworms, segmented worms, mollusks, arthropods, echinoderms, fishes, amphibians, reptiles, birds, and mammals.

    (Source: DCMP)

  • Horseshoe crab partially out of the water among debris and plants. Caption: On the highest tides, they drag themselves to shore

    One of the oldest, most successful arthropods on Earth, horseshoe crabs have existed for over 350 million years. But in recent years their populations, have crashed by 75% from overfishing, resulting in moratoriums on catching them. Few of us know that most human lives depend on the valuable, shockingly blue blood of these "living fossils." Even more surprising, a tiny shore bird, the red knot, is so dependent on them that the crabs' population crash may make these long-distance flyers extinct. This mystery of mutual dependencies emerges from filmmakers and scientists revealing a disturbing ecology story ranging from the Arctic regions to the southern tip of the Americas.

    (Source: DCMP)

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  • Animals

    • Video

    Resources to teach younger students about animals

    A collection containing 58 resources, curated by DIAGRAM Center