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AnimalID

Name

5415

Giant Pacific Octopus

LocationName:

Pacific Ocean

Origin:

Marine Mania expansion

PurchaseCost:

$900

RequiresResearch:

No

IsClimber:

No

IsJumper:

No

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

Description:

The reclusive giant octopus of the Pacific should be a source of great entertainment for your guests--if you can coax him out of his house. These gigantic cephalopods can grow up to 30 feet in diameter (measured from arm to arm). They build and maintain homes throughout their Pacific habitats and are very reluctant to come out and entertain visitors.

During their three-to-five year life spans, the giant octopus, one of the largest of the invertebrates, can grow to a mass of over 250 pounds. Most people have heard of the eight arms of the octopus, but few know of their specialized purposes. The two dorsal arms are used for exploring--even a blind octopus can feel and grasp its way across the ocean floor. The next two arms are the offensive arms, used for grabbing. The remaining four arms are the ventral arms, used for anchorage. An octopus always tries to have some contact with the sea floor, preferring to avoid drifting with the currents. All eight of these arms can be elongated considerably, but the octopus can also contract itself, squeezing itself into very small spaces. Each arm is covered in two rows of sucker disks that are one to two inches in diameter and can regenerate if lost. The blue-blooded octopus has two gills for gas circulation, with a circulatory system similar to that of a fish. The main part of the body, the mantle, has openings used to renew the water in the body cavity. This water is used as part of the octopusí jet propulsion system for movement.

The favorite foods of the giant octopus are crabs and shrimp. When they cannot find these foods, they are also known to eat scallops, snails, fish, turtles, all kinds of crustaceans, and other mollusks (even other octopi). Since many of these animals have exterior shells or exoskeletons, the octopus needs to be an expert can opener. First they subdue their prey by spitting poison onto them. Then they bite them open, pull them apart with their suckered arms, or drill through a particularly hard to open shell with their beaks. Once open, the octopus injects saliva into the flesh of its prey to soften the meat so that it can be sucked out. When not hunting, most octopi are busy avoiding predators. Large fish, sea otters, elephant seals, sea lions, and other octopi all hunt the giant octopus, and without a hard shell or much of a defense system, they must count on being sufficiently alert to escape predators.

The giant octopus has several features helping it escape predators. The first of these is "homochromatism," the ability of the octopus to take on the coloration of its surroundings. Using cells known as chromatophores and iridocytes, the octopus can change its color to match its surroundings. An octopus can change color in as little as two seconds. Color changes are used both for camouflage and to express emotions (a red octopus is an angry octopus). The giant octopus can also create a cloud of ink to cover its getaway.

Most of the defense systems of a giant octopus center on being able to make a quick escape. An important part of this plan is to have a den to escape to. All octopi have a den, hole, or home. An octopus den may be a cave or a man-made object (like a pot). Octopi are generally found on the ocean floor in water less than 65 feet deep. When choosing a den site, an octopus will avoid very shallow water, since waves and other disturbances are more common in shallow water, and these can move around objects in the den and get sand inside the animalís mantle. In addition to hiding inside their houses, octopi build pebble defenses around their homes and maintain a trash pile (known as a midden) some distance from the house.

Female octopi have another use for their houses. Once in their lifetime, a female octopus will spend several days laying 20,000 to 100,000 eggs in four-inch cylindrical egg sacs suspended from a wall within her house. She will spend the next five to seven months tending, cleaning, and aerating these eggs. Generally, the female will not eat or leave the den during this period, since her constant attention to the eggs is needed to keep them alive. Because of this, female octopi generally die soon after their eggs hatch.

 

Attractiveness Adult:

Attractiveness Young:

Initial Happiness:

Habitat Preference:

70
85
70
70

Captivity:

Crowd:

CrowdHappiness Change:

ClimbsCliffs:

10
20
-5
No

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

To build a good animal exhibit you need to ask a few questions: (click them for the answers)

Which tank wall is suitable for this animal?     Remember that all tanks need a tank filter!

How big should the exhibit be and what Depth should the tank be?

What foliage should be used?

What rocks should be used?

What shelter does the animal need?

What toy does the animal like?

Does this animal perform in a show?

No

 

TankWallName

Purchase Cost

See Through

Height

Strength

Life

Cost Effective

Concrete Edge and Glass

$125

Yes

3

500

13

10.4

Atlantean Tank Wall

$125

Yes

3

500

13

10.4

Solid Concrete

$125

No

3

500

13

10.4

Black Bar and Glass

$130

Yes

3

500

13

10.0

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

Animal Density

Min

Number of Animals/Exhibit

Max

48

1

 

2

TankDepth
8
 
28

Terrain Name

Value

1

2

3

4

5

6

7

8

9

10

Saltwater
100
48
96
144
192
240
288
336
384
432
480

Rocks

8
15
31
46
61
77
92
108
123
138
154

Foliage

10
5
10
14
19
24
29
34
38
43
48

Exhibit Size

100
48
96
144
192
240
288
336
384
432
480

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

ID

Value

TreeName

Foliage Effect

Cost/ Square

Cost Effective

7418
6
Sea Sponge
6
$100
6.0
7400
6
Sea Anemone
6
$110
5.5
7420
6
Tube Worm
6
$125
4.8
7405
6
Orange Cup Coral
6
$155
3.9
7421
6
Purple Sea Urchin
6
$110
5.5
7403
6
Brittle Sea Star
6
$125
4.8
7404
3
Clam Bed
3
$125
2.4
7415
3
Sea Star
3
$125
2.4
7409
3
Kelp
3
$125
2.4
7410
3
Sea Lettuce
3
$110
2.7
7416
3
Seaweed
3
$100
3.0
7401
3
Barnacles
3
$75
4.0

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

ID

Value

RockName

Size X

Size Y

Rock

Rock Effect

Purchase Cost

Cost Effective

9235
6
Small Ocean Floor Rock
1
1
Yes
24
$100
24.0
9236
6
Medium Coral Formation
4
4
Yes
6
$150
4.0
9238
6
Medium Ocean Floor Rock
2
2
Yes
6
$150
4.0
9239
6
Large Coral Formation
4
6
Yes
6
$175
3.4
9237
6
Large Ocean Floor Rock
4
4
Yes
6
$165
3.6
9241
6
Isle Rock
8
8
Yes
6
$150
4.0

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

Shelter ID

Shelter Name

Shelter Value

Shelter Effect

Purchase Cost

Capacity

Requires Research
8136
Sunken Ship
12
2
$800
4
No
8135
Seafloor Cave
12
2
$650
4
No

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

ToyID

ToyName

ToyValue

PurchaseCost

6466
Fake Clam
100
$185
6468
Treasure Chest
100
$185
6470
Deep Sea Diver
100
$200

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

ReproductionChance:

Low

SickChance:

5

ReproductionInterval(months):

9

SickChange:

-12

HappyReproduceThreshold:

98

DeathChance:

10

Offspring:

2

TimeDeath(months):

36

BabyToAdult(months):

4

 

 

SkipTrickHappiness:

 

SkipTrickChance:

 

 

SalinityChange:

-10

SalinityHealthChange:

-20

PooWaterImpact:

5

MurkyWaterThreshold:

60

MurkyWaterChange:

-5

MurkyWaterHealthChange:

-5

VeryMurkyWaterThreshold:

20

ExtremelyMurkyWaterThreshold

1

VeryMurkyWaterChange:

-10

ExtremelyMurkyWaterChange

-15

VeryMurkyWaterHealthChange:

-10

ExtremelyMurkyWaterHealthChange:

-15

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?

 

Compatible Animals

Prey Animals

Giant Squid 5

KeeperFoodType:

Fish

Lion's Mane Jelly 5

Man

Mermaid 10

 

General Information

Building an Exhibit

The Life Cycle

Who do they like to live with and eat?