Transcript OCTOPUS

OCTOPUS
ANOTHER MONSTER OF THE
DEEP!
KNOWN AS THE
“DEVILFISH”
OCTOPUS
• EIGHT ARMS (MAY BE CALLED
TENTACLES)
• SUCKER DISCS, BUT NO HOOKS
• TWO ROWS OF SUCKER DISCS PER
ARM, TOTAL OF 240 DISCS PER ARM!
• 1,920 TOTAL SUCKER DISCS!
• USE SUCKER DISCS TO “TASTE”
• NO SHELL LEFT!
OCTOPUS VERSES SQUID
• HAVE BEAKS AND INK SACS LIKE
SQUID
• USE CHROMATOPHORES FOR
CAMOUFLAGE
• USE SUCTION DISCS TO HOLD PREY
• USE JET PROPULSION FOR
MOVEMENT
OCTOPUS VS. SQUID
•
•
•
•
NO FINS
NO LONG TENTACLES
POWER OF REGENERATION
USE OTHER METHODS OF MOVEMENT
SUCH AS “WALKING” OR CREEPING
• USE TOXINS TO HELP PARALYZE
PREY
BIPEDAL LOCOMOTION
• SOME SPECIES LIFT 6 ARMS AND USE
THE OTHER TWO FOR “WALKING”
• USE SUCTION CUPS LIKE TANK
TREADS (CONVEYOR BELT)
• ALLOWS THEM TO BACK PEDAL
AWAY FROM PREDATORS WHILE
STILL MAINTAINING THEIR
CAMOUFLAGE
REPRODUCTION
• MALES HAVE A SPECIALIZED THIRD
RIGHT ARM THAT IS MODIFIED TO
TRANSFER PACKETS OF SPERM TO
THE FEMALE
• THE FEMALE ACCEPTS PACKETS
INTO THE REPRODUCTIVE TRACT
REPRODUCTION
• FEMALES LOCATE A CAVE OR DEN
AFTER REPRODUCTION
• LAY THOUSANDS OF EGGS (100,000)
OVER SEVERAL DAYS OR WEEKS
• EGGS ARE FERTILIZED AS THEY PASS
THROUGH THE REPRODUCTIVE
TRACT
• EGGS ARE ATTACHED TO EACH
OTHER AND TO THE TOP OF THE
CAVE
REPRODUCTION
• THE FEMALE PROTECTS THE EGGS,
NOT EVEN LEAVING TO EAT FOR 1-2
MONTHS
• THE FEMALE DIES FROM WEAKNESS
AS SOON AS THE EGGS HATCH
SIZE
• OCTOPI RANGE FROM SMALLER
COMMON SPECIES AND REEF
DWELLERS TO THE LARGEST
SPECIES - THE GIANT OCTOPUS
• AVERAGE LIFE SPAN IS 1-2 YEARS
INTELLIGENCE
• OCTOPI ARE EXCELLENT PROBLEM
SOLVERS
• OPEN CONTAINERS, ESCAPE TANKS,
AND MOVE OBJECTS
• CAN FLATTEN AND MANIPULATE
THEIR BODIES TO CLIMB IN
CONTAINERS, CREVICES, ETC.
GIANT OCTOPUS
• LIVES 3-4 YEARS
• DEPTHS UP TO 2500 FEET
• LENGTH (TIP TO TIP) UP TO 25 FEET,
WEIGHT UP TO 400 POUNDS
• TAKES 3 WEEKS TO LAY ABOUT
57,000 EGGS
• TAKES SIX MONTHS TO HATCH
GIANT OCTOPUS
• FEMALE GROOMS EGGS UNTIL THEY
HATCH
• RUBS OVER THE EGGS TO PREVENT
ALGAE, BACTERIA, AND SMALLER
ANIMALS FROM ATTACHING
• BLOWS WATER OVER THE EGGS TO
MAINTAIN OXYGEN SUPPLY
• EGGS HATCH AND LARVA GO TO THE
SURFACE AS PLANKTON
BLUE RING OCTOPUS
• REEF DWELLERS
• SMALL - UP TO 8 INCHES
• FLASH BRIGHT BLUE RINGS AS A
WARNING
• POWERFUL NEUROTOXIN, NO
KNOWN ANTIDOTE
• ENOUGH POISON TO KILL 26 MEN IN
MINUTES
BLUE RING OCTOPUS
• IF BITTEN, SYMPTOMS INCLUDE
NAUSEA AND BLINDNESS
• LOSE SENSE OF TOUCH, SPEECH, AND
ABILITY TO SWALLOW
• FULL RESPIRATORY ARREST
• ONLY CHANCE OF SURVIVAL IS
IMMEDIATE MOUTH TO MOUTH
RESUSCITATION FOLLOWED BY
HOURS OF HEART MASSAGE