Is a starfish a loner or does it have a group?

Has there been shark attacks in the Mediterranean? Is a abalone a producer? How do you take care of aquarium fish? What microorganisms live in salt water? Do plecos eat fish food off the ground? What feature makes a goldfish a vertebrate? Are bull sharks found in the Sacramento river and when? Is a mullet a decomposer or a consumer? How many types of cybercrime are there? Are their real mermaid lalaloopsys? What is the similarity between a whale shark and a tiger shark? How do eels have babies? Is a stinkbug a vertebrate or invertebrate? Can garlic cure whitespot in marine fish? Is it illegal to own lionfish? What are the trade imports and exports for fisheries? How much water do you put in a 30l biorb fish tank? Can sharks smile? Safe to eat a fish frozen for 2 years? What edible fish are there in the Amazon?