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Across 5. Salt marshes, a broad shallow river mouth where fresh and salt water mix. 7. The larger organism with which the symbiont lives benefits he relationship. Rare in marine organism. Example anemone fish and its sea anemone. 9. most common symbiotic relationship. Parasites live on/in host part of life cycle. Don't kill but reduce feeding efficiency, depleting its food reserver, reduce reproductive potential, low resistance to disease, and take energy. 10. A relatively dense aggregation of fishes, squid, and other mesopelagic organisms capable of reflecting a sonar pulse that resembles a false bottom in the ocean.

Down 1. an exclusive relationship between two species; parasites can usually parasitize only one host. 2. organisms capable of tolerating extreme environmental conditions- especially temperature or pH levels. 3. The symbiont benefits, host neither benefits nor harmed. Commensals enter partner's habitat after growth cannot escape. 4. has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water, as in estuaries. 6. interaction between two different organism living in close association, typically to the advantage of both mutually beneficial relationship. 8. is a common characteristic found in organisms in the deep pelagic and benthic communities. individuals in a family tent to be much larger in the deep water then shallow ocean.