>> ♪ DINOSAUR TRAIN ♪ [WHISTLE BLOWS] >> ♪ DINOSAUR TRAIN ♪ >> ♪ ONCE UPON A TIME THERE WAS A MOM HER NAME WAS MRS. PTERANODON SITTING ON HER NEST SHE HEARD A SCRATCHING AND SAID... ♪ >> OH, BOY!

MY EGGS ARE HATCHING!

>> ♪ ONE BY ONE HER KIDS POPPED FREE BABY PTERANODONS 1, 2, 3 ♪ >> I'LL NAME YOU TINY, SHINY, AND DON.

>> ♪ BUT TINY SAID... ♪ >> WAIT!

THERE'S ONE MORE, MOM!

>> ♪ LAST LITTLE BABY WAS A DIFFERENT SIZE WITH TEETH AND A TAIL AND BIG GREEN EYES HE DIDN'T LOOK ANYTHING LIKE THE REST ♪ >> WHAT AM I DOING IN A PTERANODON NEST?

>> ♪ BUT DEAR, OLD MRS. PTERANODON SAID... ♪ >> OH, THIS IS YOUR FAMILY, AND I'M YOUR MOM.

YOU MAY BE DIFFERENT, BUT WE'RE ALL CREATURES.

ALL DINOSAURS HAVE DIFFERENT FEATURES.

COME ON, BUDDY.

WE'LL TAKE A VACATION.

I'LL GET US A TICKET AT PTERANODON STATION.

WE'LL TRAVEL THE WORLD IN SUNSHINE AND RAIN AND MEET ALL THE SPECIES ON THE... >> ♪ DINOSAUR TRAIN ♪ >> ♪ DINOSAUR TRAIN ♪ >> ♪ DINOSAUR TRAIN ♪ >> ♪ DINOSAUR TRAIN ♪ >> ♪ WE'RE GONNA RIDE ♪ >> ♪ RIDE, RIDE, RIDE, RIDE ♪ [WHISTLE BLOWS] >> ♪ THE DINOSAUR TRAIN ♪ [ROARING] >> AWK!

OK. NOW WAVE ON THE BREEZE LIKE A TALL, TALL TREE.

OK.

THE NEXT LEADER IN NATURE TRACKERS FOLLOW THE LEADER IS-- >> HEY, LOOK!

IT'S HOWARD!

I KNOW.

LET'S PLAY FOLLOW THE DRAGONFLY.

>> YEAH!

[BUZZ] AAH!

>> YOU OK, SHINY?

WHY DID YOU YELL?

>> YELL?

I DIDN'T YELL.

>> OH, LOOK.

A SNAKE.

HE'S SO BEAUTIFUL.

>> HEY, SHINY.

IS THE SNAKE WHY YOU YELLED?

>> NO, NOT AT ALL.

I YELLED BECAUSE I WAS EXCITED TO FLY UP HERE.

I WANTED TO SEE IF...

THE LAMBEOSAURUS FAMILY WAS COMING BY.

NOPE.

NO ONE THERE.

>> OF COURSE SHINY'S NOT AFRAID OF SNAKES.

SHE'S A NATURE TRACKER, AND SNAKES ARE PART OF NATURE.

>> TINY'S RIGHT.

NICE SNAKY.

LEAVING SO SOON?

OH, WELL.

BYE, SNAKY.

GREAT TRACKING YOU.

>> SHINY, THAT'S A GREAT IDEA!

WE SHOULD TRACK A SNAKE!

>> I AM TRACKING A SNAKE.

>> I MEAN, TRACK A BIGGER SNAKE, A REALLY HUGE SNAKE LIKE--LIKE SANAJEH!

>> SA-SA-SANAJEH?

>> BUT, TINY, SANAJEH ISN'T EVEN REAL.

IT'S JUST A SCARY STORY DAD TELLS US ON DARK AND STORMY NIGHTS.

>> HEH HEH.

OOH, YEAH.

THAT STORY ABOUT THE MEAN, HUGE, DINOSAUR-EATING SNAKE.

>> BUT SNAKES AREN'T SCARY, AND JUST THINK.

IF SANAJEH IS REAL, WE COULD BE THE FIRST ONES TO TRACK IT.

>> WE COULD GO ON THE DINOSAUR TRAIN AND AS MR.

CONDUCTOR.

I BET HE'LL KNOW IF SANAJEH'S REAL.

>> MOM, DAD!

>> CAN WE TAKE THE DINOSAUR TRAIN?

WE WANT TO FIND OUT IF SANAJEH'S REAL.

>> AND IF IT IS, WE WANT TO TRACK IT!

>> CAN WE, PLEASE?

>> REALLY?

YOU WANT TO FIND SANAJEH?

>> IT'S OK IF WE CAN'T GO OR IF YOU'RE BUSY OR JUST NEED TO STAY HERE.

>> YOU KNOW WHAT?

I'D BE HAPPY TO TAKE YOU.

IT WILL BE AN ADVENTURE.

>> HUH?

>> UH, ARE YOU SURE, HON?

>> I'M SURE!

LET'S GO SEE IF WE CAN SOLVE THE MYSTERY AND FIND SANAJEH.

READY TEAM?

TO THE DINOSAUR TRAIN!

>> [CHEERING] >> HOORAY.

>> TICKETS, TICKETS, PLEASE.

HELLO, PTERANODON FAMILY.

>> HELLO, MR.

CONDUCTOR!

>> MR.

CONDUCTOR, I HAVE A QUESTION.

IS THE SANAJEH SNAKE REAL?

>> HAVE YOU EVER SEEN ONE?

>> WELL, I'VE NEVER MET A SANAJEH, BUT AS I UNDERSTAND IT, IT'S ABSOLUTELY REAL.

LET'S TAKE A LOOK.

>> WHOA!

>> THAT'S SO LONG!

>> IT IS.

IT'S AS BIG AS-- OH, NED, NED BRACHIOSAURUS, CAN YOU POP IN HERE FOR A SECOND?

>> YOU RANG, MR.

CONDUCTOR?

>> SURE DID.

FROM HEAD TO TAIL, SANAJEH IS EVEN LONGER THAN THE NECK OF A YOUNG BRACHIOSAURUS.

>> WHOA!

>> A SNAKE LIKE THAT MUST LIVE IN THE HUGEST HOLE EVER.

>> THAT IS...QUITE A SNAKE.

>> I GUESS THAT'S WHY EVERYONE THINKS SANAJEH IS SO SCARY.

>> I DON'T THINK IT'S SCARY.

SANAJEH IS PART OF NATURE LIKE ANY SNAKE.

>> THAT'S TRUE, TINY, BUT SNAKES STILL NEED THEIR SPACE.

THEY ARE PREDATORS, CREATURES THAT GO AFTER PREY, THEIR FOOD.

>> BUT HOW CAN SNAKES GET THEIR PREY WITHOUT ARMS OR LEGS?

>> DIFFERENT WAYS ACTUALLY.

SOME, LIKE SANAJEH, USE THEIR STRONG MUSCLES TO SQUEEZE THEIR PREY.

>> SO, UM, WHAT EXACTLY DOES A SANAJEH EAT?

NOT DINOSAURS OR PTEROSAURS, RIGHT?

>> WELL, NOTHING YOUR SIZE, THAT'S FOR SURE.

SANAJEH EATS SMALL ANIMALS.

>> SO IF SANAJEH ARE REAL, WHERE DO THEY LIVE?

>> FAR AWAY MAYBE?

TOO FAR TO VISIT?

>> NOTHING'S TOO FAR AWAY FOR THE DINOSAUR TRAIN, SHINY.

>> OH.

>> I THINK WE CAN MAKE A SPECIAL STOP.

THAT OK, MR. PTERANODON?

>> YES!

LET'S GO SEE A SANAJEH!

>> NEXT STOP SANAJEH CENTER STATION IN ANOTHER PART OF THE CRETACEOUS TIME PERIOD.

[WHISTLE BLOWS] GOOD LUCK, PTERANODON FAMILY!

I HOPE YOU GET TO MEET A SANAJEH.

>> BYE!

>> AWK!

THIS IS PERFECT!

WE GET TO USE OUR NATURE TRACKER SKILLS AND ACTUALLY TRACK SOME NATURE.

>> YEAH!

LET'S TRACK SOME NATURE!

HOW DO WE ACTUALLY TRACK NATURE?

>> HUDDLE UP, TEAM PTERANODON.

FIRST TRACKING RULE--WE ALL STAY TOGETHER.

NO WANDERING OFF, RIGHT?

>> RIGHT!

>> TRACKING IS ALL ABOUT USING YOUR SENSES TO GET CLUES TO HELP YOU FIND SOMETHING IN NATURE.

SO HOW DO YOU KIDS THINK YOU SHOULD TRACK A SNAKE?

>> USE OUR EYES TO LOOK FOR SNAKE TRACKS?

>> SNAKES MAKE TRACKS WITHOUT FEET?

>> MAYBE SLITHER TRACKS.

LET'S LOOK.

>> NOPE.

NO SLITHER TRACKS.

GUESS WE SHOULD GO.

>> OH, I KNOW.

WE CAN USE OUR EARS TO LISTEN AT HOLES AND HEAR IF ANY SNAKES ARE INSIDE.

HELLO?

>> UM, DIDN'T THE CONDUCTOR SAY SNAKES NEED THEIR SPACE?

HEH.

I THINK IT'S BETTER TO KEEP CLEAR OF THEIR HOLES.

>> OH, RIGHT.

NO HEADS IN HOLES.

>> I'VE GOT IT.

WE CAN LET BUDDY LEAD AND SNIFF OUT SANAJEH WITH HIS SUPER T. REX NOSE!

>> BUDDY CAN SNIFF OUT ANYTHING.

>> [SNIFFING] HMM.

I'M NOT SURE WHAT I SMELL, BUT I SMELL SOMETHING.

I SAY...THIS WAY.

I'M TRACKING, I'M TRACKING.

>> TRACKING MEANS FOLLOWING A CREATURE'S TRACKS.

UNH!

>> OHH!

I'VE GOT AN IDEA!

>> IT'S A ROCK AND A VINE.

>> IT MAY LOOK LIKE AN ORDINARY ROCK AND A VINE, BUT WHEN YOU TIE THEM TOGETHER AND DRAG THEM, LISTEN.

[LOW SCRAPING] >> SOUNDS SNAKY.

>> I CALL IT A SANAJEH SOUND MAKER.

>> HEY.

WHAT ABOUT THIS?

CALLING SANAJEH!

CAN YOU HEAR ME?

>> HA HA HA!

>> OK. GREAT.

WE TRIED, BUT THERE'S NO SANAJEH.

I SAY LAST ONE BACK TO THE STATION IS A ROTTEN DINOSAUR EGG!

>> NOW HOLD ON, SHINY.

A LITTLE MORE TIME SEARCHING, AND THEN WE'LL HEAD BACK.

BUDDY, LEAD ON.

>> [SNIFFING] HMM.

THIS WAY.

>> HA HA HA!

>> SANAJEH?

HELLO?

SANAJEH?

WHOA!

WHAT WAS THAT?

HEY.

WHERE'S MY STICK?

>> OH!

AND MY SANAJEH SOUND MAKER!

HEY.

WHOEVER'S TAKING OUR THINGS, NO FAIR HIDING.

COME OUT AND SHOW YOURSELF!

>> [GASP] >> A SANAJEH.

>> YOU WANTED TO SSSSEE ME?

>> SNAKE.

BIG SNAKE.

>> UM, WE WERE JUST WONDERING WHY YOU TOOK OUR THINGS, BUT IT'S OK. MAYBE WE SHOULD GO HOME.

>> NO!

MY BROTHER AND SISTER DIDN'T DO ANYTHING TO YOU, AND YOU TOOK THEIR THINGS AND SCARED US!

THAT'S JUST MEAN!

AND I DON'T LIKE IT ONE BIT!

>> AAH!

>> ARE YOU OK?

>> I'M SSSORRY.

OH, PLEASE DON'T YELL AT ME.

>> UM, YOU SOUND SCARED?

>> WELL, OF COURSE I'M SCARED.

YOU'RE PTEROSAURS WITH POINTY BEAKS!

>> WE ARE?

OH, WE ARE.

>> I ALWAYS HEARD THAT PTEROSAURS WERE SCARY MONSTERS!

I AM TERRIFIED OF PTEROSAURS.

YOU'RE NOT GOING TO SWOOP DOWN ON ME AND ATTACK, ARE YOU?

>> SWOOP DOWN AND ATTACK?

WHY WOULD WE DO THAT?

>> BECAUSE YOU'RE KILLERS.

THAT'S WHAT I ALWAYS HEARD YOU PTEROSAURS DO.

>> NO.

MY FAMILY WOULD NEVER ATTACK YOU.

WE WERE LOOKING FOR YOU, BUT WE JUST WANTED TO MEET YOU.

>> WE LOVE TO MEET NEW CREATURES.

>> WE ACTUALLY HEARD YOU WERE THE ONE WHO WAS SCARY.

>> ME?

>> YEAH.

WHERE WE COME FROM, EVERYONE SAYS SANAJEH ARE MEAN AND SCARY.

>> WE EVEN HEARD YOU EAT DINOSAURS.

>> HEH.

IT'S TRUE.

SORRY.

>> BUT I'M NOT MEAN.

I AM A CARNIVORE, SO I EAT MEAT, BUT I DON'T LIKE TO ATTACK ANYTHING.

I ONLY EAT WHEN I'M HUNGRY.

>> SO I GUESS WE BOTH HEARD A LOT OF WRONG THINGS ABOUT EACH OTHER.

OK. MAYBE WE SHOULD START OVER.

I'M SHINY PTERANODON, AND THIS IS MY SISTER TINY AND MY BROTHERS BUDDY AND DON, AND THIS IS OUR DAD.

>> HI!

>> I'M SANA SANAJEH.

OOH.

IT'S LOVELY TO MEET YOU.

I DON'T GET A LOT OF VISITORS OUT HERE.

DO YOU THINK MAYBE WE COULD BE FRIENDS?

>> SURE, BUT WHY DID YOU TAKE OUR STUFF JUST BEFORE?

>> OH.

I'M SO SORRY.

YOUR TOYS LOOKED LIKE SO MUCH FUN.

I JUST WANTED TO TRY THEM, TOO, BUT I WAS AFRAID TO ASK.

HERE.

PLEASE TAKE THEM BACK.

>> THANKS!

>> SANA, HOW DID YOU GET OUR TOYS WITHOUT US SEEING YOU?

>> AND HOW DID YOU GRAB THEM WITHOUT ANY ARMS?

>> I DON'T NEED ARMS AND LEGS.

MY BODY'S STRONG MUSCLES LET ME SLITHER VERY STEALTHILY.

AS FOR GRABBING THINGS WITHOUT HANDS, I CAN EASILY PICK THINGS UP WITH MY MOUTH LIKE THIS.

[CHOMP] >> GOT IT!

>> OOH!

A GAME!

DON'T LET THE GOURD HIT THE GROUND!

>> OHH!

>> [GIGGLING] [TRAIN WHISTLE BLOWS] >> OOPS!

THAT'S THE TRAIN, KIDS.

>> AW.

>> PLEASE COME BACK.

I'LL TAKE YOU ON THE WHOLE TOUR, AND THANKS FOR SHOWING ME I SHOULDN'T BELIEVE SCARY STORIES ABOUT CREATURES I HAVEN'T MET.

>> YOU SHOWED US THAT, TOO.

THANKS!

>> BYE, SANA!

GREAT TO MEET YOU!

>> GOOD-BYE.

SSSEE YOU SSSOON!

>> SLITHER, SLITHER, SLITHER.

>> SLITHER.

>> WE'RE SNAKES LIKE SANA!

>> UH-OH!

SHINY, LOOK OUT!

>> HEY, LITTLE SNAKY.

HOW ARE YOU?

[HISSES] >> YOU'RE NOT SCARED ANYMORE, SHINY?

>> PFFT!

NOT AT ALL.

SNAKES ARE PART OF NATURE, RIGHT, SNAKY?

HA HA HA!

I THINK HE WANTS TO PLAY.

LET'S ALL PLAY SLITHER LIKE A SANAJEH.

>> SLITHER, SLITHER, SLITHER.

>> HO HO HO!

>> HA HA HA!

>> SLITHER!

>> HI, THERE.

I'M DR. SCOTT, THE PALEONTOLOGIST.

AND THIS IS SANAJEH, AN 11-FOOT SNAKE THAT LIVED WITH THE DINOSAURS IN THE CRETACEOUS TIME PERIOD.

SANAJEH IS BIG, BUT THERE HAVE BEEN PLENTY OF BIGGER SNAKES.

NOT LONG AFTER THE AGE OF DINOSAURS, AN AFRICAN SNAKE NAMED GIGANTOPHIS GREW OVER 30 FEET LONG.

AND THEN THERE WAS TITANOBOA THAT LIVED IN SOUTH AMERICA.

THIS HUGE SNAKE GREW UP TO 40 FEET LONG.

THAT'S BIGGER THAN A SCHOOL BUS.

SNAKES IN THE MESOZOIC ERA, LIKE SNAKES TODAY, DON'T HAVE ARMS OR LEGS, SO MOST OF THE BONES IN A SNAKE ARE BACK BONES, OR VERTEBRAE.

AND LOTS OF RIBS.

ALL SNAKES ARE REPTILES, AND ALL OF THEM ARE PREDATORS TOO.

MANY OF THESE SLITHERING SERPENTS HAVE AN AMAZING ABILITY TO CATCH PREY USING THEIR WHOLE BODY.

SOME SNAKES, INCLUDING SANAJEH AND PYTHONS LIVING TODAY, OPEN THEIR MOUTHS REALLY WIDE, ALLOWING THEM TO SWALLOW ANIMALS THAT ARE MUCH BIGGER THAN THEIR HEADS.

SNAKES ARE SOME OF THE MOST AMAZING CREATURES ON EARTH.

EVEN THOUGH THEY DON'T HAVE ANY LEGS OR CLAWS, THEY'RE EXCELLENT PREDATORS THAT HAVE BEEN AROUND SINCE THE AGE OF DINOSAURS.

OK, REMEMBER, GET OUTSIDE, GET INTO NATURE, AND MAKE YOUR OWN DISCOVERIES.

>> HELLO, FOLKS.

IT'S ME THE CONDUCTOR.

TODAY THE KIDS FROM PTERANODON TERRACE WILL LEARN THAT IN NATURE EVERYTHING CHANGES, SO COME ON ALONG WITH ME ON THE DINOSAUR TRAIN.

ALL ABOARD!

>> ♪ I GET TO SEE MY FAVORITE FLOWERS OH, HOW I LOVE THEM SO THEY FILL MY EYES WITH PRETTY COLORS THEIR SMELL FLIES UP MY... ♪ NO!

>> [SQUAWKS] THAT SOUNDED LIKE TINY!

>> IT CAME FROM THAT FIELD!

>> TINY!

WHAT HAPPENED?

>> UH--IT--WE--THEY--UH-- >> WHAT'S THE MATTER, HONEY?

TROODON GOT YOUR TONGUE?

>> MY FLOWERS!

>> OK, HEARD YOU THAT TIME.

>> OH, MY.

TELL US WHAT HAPPENED, TINY.

>> ARE YOU OK, TINY?

>> ARE WE HAVING A PARTY?

>> MY BEAUTIFUL YELLOW FLOWERS WERE SO PRETTY, AND NOW THEY'RE--THEY'RE GONE!

>> IT'S SAD YOUR FLOWERS ARE GONE, BUT THAT'S HOW NATURE WORKS, SWEETIE.

THERE'S A TIME FOR FLOWERS TO BLOOM AND A TIME FOR THEM TO FADE.

>> IN NATURE, THINGS CHANGE ALL THE TIME.

>> THEY DO?

>> YEP.

LOOK UP AT THAT TREE.

I CAN REMEMBER WHEN IT WAS A LITTLE SAPLING, ONLY THIS HIGH.

>> THE TREES ARE STILL HERE, BUT MY FLOWERS ARE DEAD.

>> YOU KNOW, I REMEMBER FLYING OVER THE BIG POND RECENTLY AND SPOTTING A FIELD OF YELLOW BUTTERCUPS.

>> BUTTERCUPS?!

CAN WE GO, MOM?

PLEASE, PLEASE, PLEASE CAN WE GO?

>> ABSOLUTELY.

>> YAY!

>> AND WE GET TO RIDE THE DINOSAUR TRAIN.

WOO HOO!

>> [SQUAWKS] TO THE DINOSAUR TRAIN!

[TRAIN WHISTLE BLOWS] > [SADLY] ♪ OFF TO SEE MY FAVORITE FLOWERS OH, HOW I LOVE THEM SO THEY FILL MY EYES WITH PRETTY COLORS THEIR SMELL FLIES UP MY NOSE ♪ [CRYING] >> TINY, IT'S GOING TO BE ALL RIGHT.

LOOK, THINGS ARE ALREADY BETTER.

WE'RE ALL ABOARD THE DINOSAUR TRAIN ON AN ADVENTURE.

IT'S A PERFECT EXPEDITION FOR... >> THE NATURE TRACKERS!

>> TRACKERS.

>> YEAH, I GUESS.

>> AND YOU LOVE BEING A NATURE TRACKER, TINY.

>> I KNOW, BUT ALL I REALLY CARE ABOUT NOW IS SEEING SOME BUTTERCUPS.

>> THEN THAT'S OUR NATURE TRACKER CHALLENGE.

>> FIND TINY'S FLOWERS!

>> WELL, HELLO, PTERANODON FAMILY.

WHERE TO TODAY, NATURE TRACKERS?

>> TO THE BIG POND, MR.

CONDUCTOR, TO FIND TINY'S FAVORITE FLOWERS.

>> AND WHEN WE'RE THERE, WHO KNOWS WHAT OTHER AMAZING NATURE WE'LL SEE?

>> HA, NOW THAT'S WHAT I LIKE TO SEE--KIDS HEADING INTO NATURE, MAKING DISCOVERIES, ASKING SCIENTIFIC QUESTIONS.

>> MR.

CONDUCTOR, I HAVE A QUESTION.

>> MISS TINY, I AM READY.

>> WHY DID MY FAVORITE BUTTERCUP FLOWERS WILT AND DIE?

>> HMM.

I'M SORRY ABOUT YOUR FLOWERS, TINY, BUT THAT IS A GREAT QUESTION.

AND THE SHORT ANSWER IS, IN NATURE EVERYTHING CHANGES.

>> OOH!

>> DIDN'T I SAY THAT?

>> IT MUST BE THE HAT, DEAR.

>> HMM!

>> THIS IS A LIFE CYCLE CHART.

IT SHOWS HOW NATURE--IN THIS CASE, A FLOWERING PLANT-- CHANGES OVER TIME.

A FLOWER STARTS AS A SEED IN THE GROUND, WHICH CHANGES INTO A SPROUT.

THE SPROUT PUSHES UP THROUGH THE SOIL AND BECOMES A PLANT.

THEN THE PLANT CHANGES, GROWING FLOWERS LIKE YOUR BUTTERCUPS, TINY.

BUT THE FLOWER'S WORK ISN'T DONE.

>> [SIGHS] THIS IS THE PART WHEN THE FLOWERS WILT.

>> THE FLOWER CHANGES AGAIN.

IT WILTS AND FALLS OFF THE PLANT, AND ITS SEEDS RETURN INTO THE SOIL, WHERE--TA DA!--THEY GROW NEW PLANTS, AND THE CYCLE STARTS ALL OVER AGAIN.

>> BRINGING EVEN MORE CHANGES.

>> RIGHT.

THE CYCLE GOES ROUND AND ROUND.

TINY, YOUR BUTTERCUPS WENT THROUGH A LIFE CYCLE, SO WHILE YOU'RE OUT NATURE-TRACKING TODAY, KEEP AN EYE OUT FOR CHANGES YOU SEE IN NATURE, AND THE PERFECT PLACE TO OBSERVE SUCH THINGS IS AT THE BIG POND!

NEXT STOP, BIG POND!

>> [TINY SQUAWKS] >> [FROG CROAKS] >> THE NATURE TRACKERS HAVE REACHED THE BIG POND BEACH.

>> RIGHT.

FIRST THINGS FIRST.

FIND MY FLOWERS!

MOM SAID THEY WERE JUST OVER THAT WAY.

>> I'LL GO FLOWER-TRACKING WITH YOU, TINY.

>> FINE.

THEN DON AND I WILL TRY LOOKING OVER...OVER THIS-A-WAY.

>> SO LONG, NATURE TRACKERS!

>> WE SHALL RETURN.

>> [BOTH GASP] >> MY FLOWERS!

AREN'T THEY BEAUTIFUL?

>> YEAH.

THEY'RE PRETTY PRETTY.

>> AND THEY SMELL SO SWEET.

[SNIFFS] OH, NO!

I GUESS WE MADE IT TO THE BIG POND JUST IN TIME.

SEE?

THERE'S SOME OF THAT CHANGE THE CONDUCTOR WAS TALKING ABOUT.

THOSE BUTTERCUPS ARE STILL FRESH AND YELLOW, BUT THOSE ARE DROOPY.

>> BUT I BET THEY'LL DROP THEIR SEEDS ON THE GROUND.

>> MAYBE TURN INTO PLANTS WITH BEAUTIFUL FLOWERS!

>> THE FLOWERS, THEY ARE A-CHANGIN'.

>> COME ON, BUDDY!

>> [BOTH LAUGHING] >> NOPE, NO BUTTERCUPS AROUND HERE.

>> BUT I JUST GOT AN IDEA.

HELP ME PUSH THE SAND INTO A PILE, DON.

>> AYE, AYE, MASTER NATURE TRACKER.

UM, WHY?

>> REMEMBER HOW MUCH FUN WE HAD MAKING OUR NATURE TRACKER CLUB HOUSE?

WELL, MY IDEA IS WE MAKE SOMETHING HERE AT THE BEACH WITH SAND.

>> WAIT.

WE'RE NOT FINDING BUTTERCUPS?

ARE WE MAKING A CLUBHOUSE?

>> SORT OF.

IT'LL BE A SANDY NATURE CASTLE FOR LITTLE CREATURES HERE ON THE BEACH, DECORATED WITH STONES, SHELLS, AND OTHER COOL STUFF.

FIRST WE DIG A BIG HOLE.

>> [GASPS] A HOLE?

>> MMM!

THERE!

ONE SANDY NATURE CASTLE FINISHED.

>> OH, NO, IT ISN'T.

IT NEEDS A MOAT AROUND THE OUTSIDE, FULL OF WATER AND HUNGRY PLESIOSAURS.

♪ DIGGIN', DIGGIN' DIGGIN' A MOAT ♪ THERE.

NOW IT JUST NEEDS WATER-- >> LOOK OUT!

HERE COMES THE WAVE!

>> ♪ LA LA LOO!

♪ HENRY!

>> HEY, HEY!

IF IT ISN'T MY OLD PALS, SHINY AND DON!

>> LOOK WHAT WE MADE, HENRY.

>> WOW!

LOOK AT ALL THE GORGEOUS SHELLS AND SEAWEED!

IT'S LIKE A PALACE!

>> IT'S A NATURE CASTLE FOR YOU.

>> ME?

A MANSION LIKE THAT?

>> THAT'S WHY WE MADE IT, FOR OUR BEACH FRIENDS TO STAY INSIDE.

>> I DON'T MIND IF I DO.

LOOK AT ME, MOVIN' ON UP!

UH-OH!

WAVE!

>> [SHIVERS] PFFT!

OH!

HOW LOVELY.

HENRY, IS THIS YOUR PLACE?

>> SURE IS, STELLA.

MY PALS SHINY AND DON MADE IT FOR ME.

KIDS, SAY HELLO TO STELLA.

>> HELLO.

>> STELLA SEA STAR.

PLEASED TO MAKE YOUR ACQUAINTANCE.

>> YOU'RE WELCOME TO STAY HERE, TOO, STELLA.

WE PUT ROCKS IN THE SIDE, SO YOU CAN CLING TO THEM.

>> WOW!

ME, A LOWLY SEA STAR, IN A PALACE!

IT'S A DREAM COME TRUE.

>> HMM.

WAIT.

DON'T MOVE IN YET, GUYS.

SOMETHING'S MISSING FROM OUR SANDY NATURE CASTLE, BUT I DON'T KNOW WHAT YET.

>> WHOA!

THAT IS ONE NICE SAND CASTLE.

>> IT'S A NATURE CASTLE, BUDDY.

>> HI, BUDDY.

HI, TINY.

THEY MADE IT FOR ME AND STELLA.

>> HI, HENRY!

HI, STELLA!

>> DID YOU GUYS HAVE ANY LUCK NATURE-TRACKING?

>> WE DID.

WE FOUND A WHOLE FIELD OF MY FLOWERS.

I BROUGHT SOME ALONG.

YOU CAN EVEN PUT SOME ON YOUR NATURE CASTLE.

>> OOH!

>> THAT DOES LOOK GOOD, DOESN'T IT?

>> FANTASTIC!

>> [BEE BUZZING] >> IT EVEN GIVES INSECTS A PLACE TO PICK UP POLLEN ON THEIR WAY HOME.

>> [SQUAWKS] IT'S BEAUTIFUL, SHINY.

>> THANKS TO YOUR FLOWERS, TINY.

>> AFTER YOU.

>> NO, MADAM.

AFTER YOU.

[WAVE CRASHING] >> UH, YOU GUYS HEAR SOMETHING?

>> NO!

>> [SQUAWKS] WHAT IS IT, KIDS?

>> OUR SANDY NATURE CASTLE.

IT WAS SO BEAUTIFUL, AND-- >> A WAVE JUST WASHED IT AWAY!

>> OH, I'M SORRY, KIDS.

I CAN SEE YOU'RE ALL DISAPPOINTED.

>> WELL, THE BEACH IS PART OF NATURE, RIGHT?

AND LIKE SOMEBODY SAID, NATURE ALWAYS CHANGES.

>> YEAH.

>> I GUESS OUR NATURE CASTLE IS PART OF THAT NATURE CYCLE, LIKE YOUR FLOWERS, TINY.

>> EXACTLY, DON.

>> [SHIVERS] TRUST US, NATURE'S ALWAYS CHANGING, RIGHT, STELLA?

STELLA?

[GASPS] STELLA!

>> I'M HERE, AND, YES, CHANGE IS THE ONLY THING ABOUT NATURE THAT DOESN'T CHANGE.

>> MM-HMM.

>> SO, SHINY, DO YOU KNOW WHAT THIS MEANS?

WE CAN BUILD ANOTHER NATURE CASTLE, A BIGGER AND BETTER ONE!

>> AND THIS TIME, WE COULD EVEN USE BARK TO DECORATE THE WALLS.

>> FANCY!

>> AND MORE OF MY FLOWERS.

>> CAN WE, PLEASE, PLEASE, PLEASE COME BACK TOMORROW?

>> HEH HEH!

ARE YOU KIDDING?

I WANT TO HELP BUILD THAT NATURE CASTLE WITH YOU.

>> HOORAY!

>> HEH HEH!

STELLA AND I LOOK FORWARD TO IT.

>> OK, TEAM PTERANODON, TIME TO HEAD BACK TO THE TRAIN FOR HOME.

>> GOT ONE.

MY FAVORITE FLOWERS ARE JUST ABOUT GONE FOR NOW.

[SNIFFS] I HAVE TO ENJOY THEM WHILE THEY LAST.

>> BYE, HENRY!

BYE, STELLA!

>> OH, THAT IS ONE BIG HAPPY FAMILY.

>> KOOKY, BUT HAPPY.

OK, LET'S FIND A BRANCH AND FLOAT AROUND.

>> OH!

HA HA HA!

GO WITH THE FLOW!

OH, YEAH!

>> I LIKE THAT ONE!

>> SEE?

LOOK.

TINY, NEW FLOWERS ARE STARTING TO GROW BACK.

>> TINY NEW FLOWERS FOR TINY.

>> [ALL LAUGH] >> HI THERE.

I'M DR. SCOTT, THE PALEONTOLOGIST.

DID YOU KNOW THAT THE VERY FIRST FLOWERS APPEARED NEAR THE END OF THE AGE OF DINOSAURS?

YUP, THAT MEANS JURASSIC DINOSAURS LIKE STEGOSAURUS AND APATOSAURUS NEVER SAW OR SMELLED A FLOWER.

DURING THE TRIACIC AND JURASSIC PERIODS, THERE WERE PLENTY OF PLANTS AROUND, FROM TINY FERNS TO GIANT CONIFERS.

BUT NOT A SINGLE FLOWER.

SO PLANT-EATING DINOSAURS HAD TO FIND SOMETHING ELSE TO EAT.

FLOWERING PLANTS SHOWED UP IN THE CRETACEOUS PERIOD AND SOON TOOK OVER THE PLANT WORLD.

THERE WERE BIG FLOWERING TREES LIKE MAGNOLIAS AND MAPLES, AND BEAUTIFUL LITTLE FLOWERING PLANTS.

FLOWERS ADDED A LOT MORE COLOR TO THE CRETACEOUS WORLD, AND A WHOLE NEW KIND OF FOOD FOR PLANT-EATING DINOSAURS.

SO WHEN YOU SEE A FLOWER, REMEMBER, THEY'VE BEEN AROUND FOR MILLIONS OF YEARS, SINCE THE AGE OF DINOSAURS.

OK, GET OUTSIDE, GET INTO NATURE, AND MAKE YOUR OWN DISCOVERIES.

>> WE LOVE PLAYING GAMES LIKE "ALL ABOARD."

YOU CAN PLAY TOO, ONLINE AT pbskids.org.

>> AND LOTS OF OTHER GAMES.

>> THERE'S SO MUCH TO LEARN ABOUT ALL KINDS OF DINOSAURS.

>> GO TO pbskids.org.

>> WE'RE GONNA RIDE THE DINOSAUR TRAIN ♪ >> ♪ DINOSAUR TRAIN ♪ >> ♪ DINOSAUR TRAIN ♪ >> ♪ DINOSAUR TRAIN ♪ >> ♪ DINOSAUR TRAIN ♪ >> ♪ DINOSAUR TRAIN ♪ >> ♪ WE'RE GONNA RIDE ♪ >> ♪ RIDE, RIDE, RIDE, RIDE ♪ >> ♪ THE DINOSAUR TRAIN ♪ CAPTIONED BY THE NATIONAL CAPTIONING INSTITUTE --www.ncicap.org--