Re: NANFA-- Freshwater inverts
Sat, 18 Dec 1999 15:41:37 EST

In a message dated 12/17/99 2:46:02 PM Eastern Standard Time, writes:

<< in a medium water stream ( warm water) their is a
sponge that grows "towers" kind of like those magic rocks they used to sell
to kids. these grow in the current, which seems odd, as i would assume the
current could be hard on the towers. >>
Oops, forgot to remark on this one! I think it is possible that it may be a
useful strategy for dispersal to make new colonies further downstream, like
after a heavy rainstorm the velocity of the water currents increases it seems
like it would break off the ends of the "towers" and carry them to new
locations. Perhaps there are feeding advantages to this type of structure as

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