What is cactinian?

Are mud daubers dangerous? Why is the earthworm at the bottom of the energy pyramid? Why do tube worms and hundreds of other species thrive near hydrothermal vents? How slugs find food? What do the starfish grooves contain? What kind of spider is black with a white stomach? How can the monarch butterfly and its caterpillar have the same DNA? Why wont it let you put the berries down in the new binpet mission on binweevils? How can you get rid of sea ticks on a person? Is a cone shell an insect? Can an ant live without body parts? Can you install coil springs upside down? Do bedbugs serve any positive purpose to society? Why are invertebrates are endangered? Do midges have a point? What is the Valve adjustment procedure on 3054 caterpillar? Are spiny leaf insects increasing or decreasing in numbers? Explain how the grasshoppers exoskeleton is an advantage? Do slugs eat cucumber? What does the great Atlantic octopus eat and how?