Simple categories matching symbiotic:

• algae,
• organism,
• invertebrate,
• microorganism,
• bacteria,

Members with property symbiotic:

• streptomyces,
• bacteria,
• fungi,
• protozoan,
• ascidian,
• commensal,
• bacillus,
• parasitic_organism,
• dinoflagellate,
• mollusca_giant,
• intestinal_bacteria,
• blue-green_algae,
• sponge,
• unicellular_eukaryote,
• staphylococcus,
• lactobacillus,
• lichen,
• soft_coral,
• chlamydia,
• streptococcus,
• coral,
• cnidarian,
• algae,
• lichen_fungi,
• candida,
• mycobacterium,
• clostridium,
• cyanobacteria,