Note: This story was dynamically reformatted for online reading convenience.
 
 Serena awoke with the sun the next morning.  There was a fresh white bikini
on the nightstand for her to wear.  She got out of bed, put on the bikini,
and did her morning wash-up.  After breakfast, she would explore the cave.

   The same two women brought Serena her breakfast.  It was the same
breakfast as the previous day.  Serena at everything, drank some of the
water, and then went to look for a canteen or water skin.  She found a
small water skin just around the corner from her shed in a barrel.  She
poured the remainder of the water into the skin and set off to explore the
cave.

   It didn't take her long to find the path through the forest that led to
the cave.  She followed the path to the clearing and stopped before the
entrance to the cave.  Serena took a sip of water and a deep breath.  Then
she slowly entered.

   The cave had its own lighting.  Whether it was artificial or natural,
Serena did not know.  But she did not need a torch or lamp to find her way.
She slowly worked her way deeper into the cave, checking from side to side.
This path appeared to be the only way in or out; she found no side passages
to mislead her.

   Serena turned a corner and came upon a nice-sized indoor lake.  On the
far side of the lake, there were two other passages.  There were also some
stools and tables at various points around the lake.  The lake also had a
nice black sand beach.  Serena walked to the edge of the water and knelt
down.

   Serena took some of the water in her hand and smelled it.  It was fresh,
and seemed pure.  Serena tasted it and almost fell over.  She had become
instantly aroused.  Her nipples tingled and the area between her legs felt
a jolt of pleasure.  She felt herself start to get wet.  She giggled a bit
and looked around for her Master but saw no sign of him.  Serena sipped
some of the water and stood up.  The tingle increased.  She was becoming
very aroused.

   Serena stood up and looked around.  It had been a while since she
climaxed.  She slowly walked to one of the stone tables.  There was no one
here.  She smiled and decided to lie on one of the tables and relieve
herself.  Besides, her arousal level continued to build and she didn't
think she could stand much longer.  She needed relief now.  She lay on the
table, bent her knees, spread her legs, and put her right hand inside of
her bikini bottom.  With her left hand she pushed her top up and began to
tweak a nipple.  She closed her eyes and started to masturbate.

   Serena should have kept her eyes open.  The water in the lake began to
stir, and then a wave moved toward the beach.  Ever so slowly, a most
unusual creature broke the surface and began to crawl across the beach
towards Serena.  Serena was too heavily involved in her masturbation to pay
attention.  She had slid her bikini down to mid-thigh and her fingers were
working her nipples and her mound.

   The creature was about fifteen feet long, from the tip of its tail to
its nose.  A long trunk, about two feet long, extended from its nose.  The
tip of the tail came to a blunt, rounded point.  Along its back were eight
spines, and its back was a hard shell.  There were six long tentacles
extending from each side, for a total of twelve.  It was a pale grey on its
head, and the color gradually darkened to a pale red at its tail.  It had
two oversized, pale eyes.  It used its tentacles to slowly crawl across the
beach toward Serena.

   Serena had climaxed and was slowly coming down from the orgasm.  She
rested on the table with her eyes closed.  She felt something cold and
clammy grab her ankles and begin to pull her off of the table.  She sat up
and gasped.  The creature had her.

   Serena struggled, but the creature was too strong.  It worked the first
set of tentacles to her thighs, added a second set around her ankles, and
yanked her from the table onto the sand, spreading her thighs wide. 
Another set of tentacles ripped her bikini bottom free and tossed it aside.
And then the long trunk attached to its nose began to explore her most
intimate place.

   Serena squirmed and tried to get away, but the tentacles were holding
her much too tightly.  Then she felt the sensation of the trunk on her
mound, exploring and probing.  Serena gasped, took a deep breath, and felt
a deep stab of pleasure.  She struggled a bit more, but the tentacles
tightened their grip with each of her wiggles.  The first set of tentacles
ripped off her bikini top and then gripped her arms, pinning them to her
sides.  The second set moved up to her thighs, and a third set gripped her
ankles, spreading her legs as far as they would part.  The creature's trunk
probed her slit, and entered her, wiggling.  Serena stopped her squirming.

   Serena shivered and panted with delight as the creature got her very
close.  She had never felt anything like that inside of her.  The wiggling
of his trunk was wonderful.  Suddenly the creature withdrew.  "This is so
unfair!" she thought to herself.  The creature moved himself higher on her
body and began to suck on her nipples with the trunk.  It arched its back
and worked its tail around between her legs.  Then in inserted the tail
into her vagina.  Regina arched her back.

   The creature began to work its tail inside and outside of the girl,
slowly at first and then a bit faster.  Its trunk began to suck on her
nipples, moving from nipple to nipple.  Serena gasped and gave into the
pleasure.  The sensations of the tail inside of her were wonderful!

   The creature continued its movement inside of the girl.  Serena rocked
in time to his thrusts.  The creature did not move quickly; it moved at the
best speed for its own pleasure.  Serena responded.  She gently rocked with
the creature until she could rock no more.  She climaxed once, then twice,
and went limp.  The creature continued with its motion.  To Serena, it felt
like it was fucking her forever.

   When the creature was satisfied, it climaxed.  To Serena, it felt like a
gallon of sperm was being squirted inside of her.  She could feel the
juices running down her thighs.  She relaxed and laid on the sand as the
creature finished its climax.  It then disentangled itself from the girl,
turned around, worked its way back down to the beach, and entered the
water.

   Serena lay on her back and slowly recovered.  After roughly thirty
minutes, she sat up and saw the dried creature semen on her thighs.  She
smiled and entered the small lake, washing herself.  She found and examined
her torn bikini.  It was useless.  She grabbed her water and took a drink,
and then decided to continue on into the cave.  Now, the question was which
entrance to take?