What symbiotic relationship is sea slug and algae?

The symbiotic relationship between sea slug and algae is mutualism because both have benefited with each other. This is an astonishing case of symbiosis since it is intracellular. The algae’s cell composition is ruin when it will integrate into the sea slug’s skin, but still the algae stay usable for several months. The algae acquired protection, but the sea slugs benefited more with this relationship.