Firsts — 23 April 2001

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Pre-Dawn Low Tide in Blackfish Creek

Low tide arrived a little before dawn.  The first “workable” tide of the season.  Bathed in salmon, Blackfish Creek seemed an impressionist’s canvas as I stumbled bleary eyed to the shoreline and prepared for the morning’s quest.  Temperatures hung in the low fifties and I could feel the swift, cool bay through my waders as I slogged midway across the channel to reach the rip.


The “Rip” Forms as Salt Marshes Drain at Low Tide

The rip forms as acres of abutting marsh are drained by Wellfleet’s 15-foot tidal swing and water gushes through the shrinking “hose” of Blackfish Creek.  At the rip itself, water levels drop to inches when ebb tide approaches and sandbars further constrict the flow.  Diamondback terrapins, surprised to find their habitat disappeared beneath them, are flushed through the rip with each tidal swing.  Last evening, I saw the first terrapin of the season paddling through the channel.  So, this morning might offer the first capture of the year.

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Mature Female Terrapin #920 Tumbles through the Rip

Visibility ranged from good to lousy depending on location.  In the center of the flow, algae and seaweed oozed through the channel as if it were a giant vacuum cleaner sucking out winter’s debris.  At the edges and in eddies, the water provided enough clarity to see critters flowing by.  The first big carapace I saw wasn’t a turtle but a large female horseshoe crab that clawed its way onto the rim of the rip and burrowed down.  Further up channel, I saw four mating pairs of horseshoe crabs, females digging into the soft sand and males hanging on for dear life and flapping wildly in the turbulent current.  A flounder whooshed by me, and then I caught sight of a mature female (Terrapin 920) zooming out of control, spinning and tumbling as she bounced over the rip.


Eager Male Terrapin #1046 Follows #920 through the Rip

Number 920 had last been observed on the morning of 30 August as she basked off a nearby sandbar.  At the time she was plump and ready — at 1400 grams — to handle six months of brumation.  Today, she still seemed in excellent shape, although she had lost 36 grams over winter.  Immediately following her came Terrapin 1046, an eager 7-year-old male, hot in pursuit and equally out of control in the rapids.


Male Diamondback Terrapin #1047 Streams through the Rip

And finally, ten minutes later, a dark colored mature male (Terrapin 1047) came streaming through the channel.


Mature Female Terrapin #920 Returns to Blackfish Creek

After getting assessed, measured, weighed, and (for the two males who had not been previously seen) marked, the threesome hot-footed across the beach and, with a swish of the tail and a critical hiss, they disappeared once again into depths of Blackfish Creek … with stories to tell their awakening comrades.

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