What are underwater scavenger?

Do blue-ringed octopus change color with the season? Definition of bivalve? What insects and fruits are in the rainforest's of Nicaragua and Cost Rico and Panama? What type of eyes do earthworms have simple or componnd? How do waste water plants use chemistry to purify water? How has the rhino beetle adapted to life in the rainforest? Is a Hines emerald dragonfly a herbivore? Does rice weevils develop from rice grains? What characteristic is shared by all worms? What insect or fly uses a paper tube like covering for its young? Why you call zero by the name zero? Why are insect wings transparent? What are 2 advantages and 2 disadvantages of spiders? Does a tarantula ever kill an attacking pepsis wasp? Are sponges invertebrates or vertebrates? Do stink bugs have any other defense besides stink? Do baby wolf spiders cause your skin to rot? What is the mode of feeding of cockroaches? What is a tradescantia? What are the odds o getting guinea worm disease?