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A. NELSON-SMITH
FIG. 15. A rock-pool a t Sennen Cove during cleansing operations ; note the algae (delicate
red and brown) emerging from the milky emulsion. The tide did not flush this pool
for several hours, during which time all its inhabitants were exposed to toxic concentrations of emulsifier. I n the absence of agitation, the emulsion has begun to break
up, producing a thin black oil (background) which could float off to pollute other
pools (photo : A. Nelson-Smith).
use fresh water in their equipment, thus imposing an additional stress
on the shore fauna and flora.
Sandy beaches present special problems which have already been
touched on (p. 239). Oil usually remains on the surface and is frequently
concentrated towards the head of the beach by successive tides, when
its mechanical removal is fairly simple, but heavy oil, " mousse ", or
A. NELSON-SMITH
FIG. 15. A rock-pool a t Sennen Cove during cleansing operations ; note the algae (delicate
red and brown) emerging from the milky emulsion. The tide did not flush this pool
for several hours, during which time all its inhabitants were exposed to toxic concentrations of emulsifier. I n the absence of agitation, the emulsion has begun to break
up, producing a thin black oil (background) which could float off to pollute other
pools (photo : A. Nelson-Smith).
use fresh water in their equipment, thus imposing an additional stress
on the shore fauna and flora.
Sandy beaches present special problems which have already been
touched on (p. 239). Oil usually remains on the surface and is frequently
concentrated towards the head of the beach by successive tides, when
its mechanical removal is fairly simple, but heavy oil, " mousse ", or