Remarkable cases occur of commensalism between certain crabs and sea-anemones, and they betoken much intelligence.
Cases of commensalism among the Echinodermata are still more rare.
commensalism includes associations in which neither party appears to benefit or be harmed.
The hermit crab and certain ascidians furnish very fine examples of commensalism.
Professor Allman has just observed a very remarkable case of commensalism between a sponge and one of the tubulari.
Parasitism, commensalism, mutualism, exist with animals among the different species.
It is a case of commensalism of which there are very numerous examples.
But the precise limit at which commensalism begins is not always easily to be ascertained.
Mr. A. Agassiz has remarked to me another example of commensalism.
Another case of commensalism has been made known to us by Professor Reinhardt of Copenhagen.
commensalism com·men·sal·ism (kə-měn'sə-lĭz'əm)
A symbiotic relationship in which one organism derives benefit and the other is unharmed.
A symbiotic relationship in which one organism derives benefit while causing little or no harm to the other. Examples of commensalism include epiphytic plants, which depend on a larger host plant for support but which do not derive any nourishment from it, and remoras, which attach themselves to sharks and feed on their leavings without appreciably hindering their hosts. Compare amensalism, mutualism, parasitism.