
These dolphin are doing something that may look a bit odd to the
uninitiated. However, if you're fortunate enough to be in the right place at
the right time, and a little luck breaks your way, you could witness a
powerful dramatic act of the dolphin world. This behavior is call strand
feeding and strand mating--a learned behavior only documented along a 100
mile stretch of coastline in this part of South Carolina.
The technique of strand feeding is quite ingenious. A pod of dolphin finds a
school of fish out in the deeper water of the North Edisto River and begins
to swim around them in smaller and smaller concentric circles, compressing
them into a tight, controllable mass. They herd the fish into shallow water,
penning them against the beach--standing guard in a semi-circle to corral
the fish against the shore. Next, they take turns swimming into the school
and eating their fill. Then, as if for sport, a large dolphin will come from
behind the group, moving with amazing speed into the shallow water where the
school of fish is trapped. Turning his body parallel to the beach, he
creates a wave filled with the small fish that comes crashing onto the
shore, stranding the fish and the dolphin out of the water and onto the
bank; the dolphin is then completely exposed on the beach. He grabs one of
the fish, flip-flops back into the water, enjoying his catch and showing off
for his buddies.
In the photo above, the two dolphin are doing a variation of strand feeding.
However, rather than beaching themselves for feeding purposes, they perform
this behavior during mating. Their bright red blood-engorged bellies are a
tell tale of sexual excitement, as they are seen here strand mating.
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