Squid have 2 gill hearts and one heart for the rest of the body. why do they need hearts for the gills?

Squid have 2 gill hearts and one heart for the rest of the body. why do they need hearts for the gills? explain. Why are their hearts white while ours is red?

Squids have a systemic heart for the systemic circulation and other two hearts for the branchial circulation, one for the right ctenidium ("gill") and the other for the left ctenidium. The systemic heart alone wouldn't be able to oxygenate hemolymph enough for a squid oxygen request, because of it's fast predatory movements.

Bridal Garter Wedding Garter Shocking Pink on Ivory Satin Bow
Bridal Garter Wedding Garter Shocking Pink on Ivory Satin Bow
$13.99
Time Remaining: 34m
Buy It Now for only: $13.99

IVORY CHAMPAGNE SATIN LACE BRIDAL PERSONALIZED GARTER VINTAGE STYLE
IVORY CHAMPAGNE SATIN LACE BRIDAL PERSONALIZED GARTER VINTAGE STYLE
$28.56
Time Remaining: 1h 8m
Buy It Now for only: $28.56

blue Satin Bridal Garter w Dangling Hearts New in Box
blue Satin Bridal Garter w Dangling Hearts New in Box
$14.88
Time Remaining: 1h 31m
Buy It Now for only: $14.88

Bridal Garter Wedding Garter Shocking Pink on Ivory Lace Bow
Bridal Garter Wedding Garter Shocking Pink on Ivory Lace Bow
$18.99
Time Remaining: 1h 34m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Set Shocking Pink on Ivory Bow  Hearts Charm
Bridal Garter Wedding Garter Set Shocking Pink on Ivory Bow Hearts Charm
$29.99
Time Remaining: 1h 35m
Buy It Now for only: $29.99

NEW Sexy White On White Wedding Garter SELECT SingleSetRegPlus Size Charm
NEW Sexy White On White Wedding Garter SELECT SingleSetRegPlus Size Charm
$17.83
Time Remaining: 4h 44m
Buy It Now for only: $17.83

NEW Sexy Hot Black Red Wedding Garter SELECT SingleSetReg+SizeCharm Prom
NEW Sexy Hot Black Red Wedding Garter SELECT SingleSetReg+SizeCharm Prom
$19.04
Time Remaining: 5h 8m
Buy It Now for only: $19.04

BRIDES WEDDING BRIDAL GARTER TOSS Satin  Lace w Pearl Hearts FREE Shipping
BRIDES WEDDING BRIDAL GARTER TOSS Satin Lace w Pearl Hearts FREE Shipping
$8.99
Time Remaining: 5h 8m
Buy It Now for only: $11.69

New Ivory Satin and Ivory Lace Rhinestone Heart Ribbon Wedding Garter Belt
New Ivory Satin and Ivory Lace Rhinestone Heart Ribbon Wedding Garter Belt
$11.25
Time Remaining: 5h 43m
Buy It Now for only: $11.25

Bridal Garter Wedding Garter Set Apple Green on Ivory Bow  Hearts Charm
Bridal Garter Wedding Garter Set Apple Green on Ivory Bow Hearts Charm
$29.99
Time Remaining: 6h 3m
Buy It Now for only: $29.99

New White Lace Garter Set Rhinestone Heart Charm Ribbon Wedding Bridal belt
New White Lace Garter Set Rhinestone Heart Charm Ribbon Wedding Bridal belt
$11.69
Time Remaining: 6h 40m
Buy It Now for only: $11.69

Bridal Garter Hortense B Hewett Co Garter White Lace Heart Bridal Blue
Bridal Garter Hortense B Hewett Co Garter White Lace Heart Bridal Blue
$10.00
Time Remaining: 10h
Buy It Now for only: $15.00

New Blue Satin and White Lace Rhinestone Heart Wedding Garter belt
New Blue Satin and White Lace Rhinestone Heart Wedding Garter belt
$7.15
Time Remaining: 10h 31m
Buy It Now for only: $7.15

New Sexy Red Ivory Wedding Garter 30 Charms to Select
New Sexy Red Ivory Wedding Garter 30 Charms to Select
$14.91
Time Remaining: 11h 13m
Buy It Now for only: $14.91

Double Heart Wedding Garter Set Red Black White Prom
Double Heart Wedding Garter Set Red Black White Prom
$20.60
Time Remaining: 13h 2m
Buy It Now for only: $20.60

FREE SH New Sexy Hot Pink Black Wedding Garter Love
FREE SH New Sexy Hot Pink Black Wedding Garter Love
$18.59
Time Remaining: 13h 38m
Buy It Now for only: $18.59

GARTER somthing new somthing blue 2 hearts charm
GARTER somthing new somthing blue 2 hearts charm
$6.54
Time Remaining: 14h 4m
Buy It Now for only: $6.54

Swarovski Wedding Garter Garters Red Ivory Yellow Black
Swarovski Wedding Garter Garters Red Ivory Yellow Black
$16.95
Time Remaining: 14h 6m
Buy It Now for only: $16.95

New Garter Set White Satin Hankie and Lace Heart Blue Rhinestone Wedding Bridal
New Garter Set White Satin Hankie and Lace Heart Blue Rhinestone Wedding Bridal
$11.69
Time Remaining: 14h 39m
Buy It Now for only: $11.69

JOURNEY HEART IVORY SWAROVSKI WEDDING GARTER GARTERS
JOURNEY HEART IVORY SWAROVSKI WEDDING GARTER GARTERS
$16.95
Time Remaining: 14h 46m
Buy It Now for only: $16.95

New Classic Ivory  Black Satin Organza Double Hearts Wedding Bridal Garter Set
New Classic Ivory Black Satin Organza Double Hearts Wedding Bridal Garter Set
$6.15
Time Remaining: 14h 48m

Hortense B Hewitt 69334 Blue Heart Keep Throw Garter Set
Hortense B Hewitt 69334 Blue Heart Keep Throw Garter Set
$29.88
Time Remaining: 15h 3m
Buy It Now for only: $29.88

DOUBLE HEART YELLOW SWAROVSKI WEDDING Garter Garters
DOUBLE HEART YELLOW SWAROVSKI WEDDING Garter Garters
$14.95
Time Remaining: 16h 28m
Buy It Now for only: $14.95

NEW Turquoise Royal Blue White Wedding Garter Sel SingleSetReg+ Size Charm
NEW Turquoise Royal Blue White Wedding Garter Sel SingleSetReg+ Size Charm
$17.95
Time Remaining: 18h 26m
Buy It Now for only: $17.95

454G I I Bridal Garter Set With Inlaid Crystal Hearts
454G I I Bridal Garter Set With Inlaid Crystal Hearts
$39.95
Time Remaining: 21h 22m
Buy It Now for only: $39.95

3768G I Lace Wedding Garter With Satin Band With Pearl Heart
3768G I Lace Wedding Garter With Satin Band With Pearl Heart
$29.95
Time Remaining: 21h 22m
Buy It Now for only: $29.95

Wedding Ceremony Party Sexy Puff Heart Romance White Marabou Feathers Garter
Wedding Ceremony Party Sexy Puff Heart Romance White Marabou Feathers Garter
$5.50
Time Remaining: 22h 16m
Buy It Now for only: $5.50

Wedding Ceremony Party Sexy Puff Heart Romance Grooms Blue Toss Garter
Wedding Ceremony Party Sexy Puff Heart Romance Grooms Blue Toss Garter
$4.74
Time Remaining: 22h 20m
Buy It Now for only: $4.74

Wedding Ceremony Party I Love God Heart Christian Religious White Satin Garter
Wedding Ceremony Party I Love God Heart Christian Religious White Satin Garter
$5.98
Time Remaining: 22h 27m
Buy It Now for only: $5.98

Wedding Ceremony Party Sexy Big Puff Heart Romance White Garter
Wedding Ceremony Party Sexy Big Puff Heart Romance White Garter
$4.74
Time Remaining: 22h 52m
Buy It Now for only: $4.74

Wedding Ceremony Party 2 Sexy Big Puff Heart Romance White  Blue Toss Garter
Wedding Ceremony Party 2 Sexy Big Puff Heart Romance White Blue Toss Garter
$9.40
Time Remaining: 23h 2m
Buy It Now for only: $9.40

Wedding Ceremony Party 2 Sexy Big Puff Heart Romance White  Blue Toss Garter
Wedding Ceremony Party 2 Sexy Big Puff Heart Romance White Blue Toss Garter
$10.44
Time Remaining: 23h 23m
Buy It Now for only: $10.44

Wedding Ceremony Party Sexy Big Puff Heart Romance White Garter
Wedding Ceremony Party Sexy Big Puff Heart Romance White Garter
$4.74
Time Remaining: 23h 25m
Buy It Now for only: $4.74

Wedding Ceremony Party Sexy Puff Heart Romance Grooms Blue Toss Garter
Wedding Ceremony Party Sexy Puff Heart Romance Grooms Blue Toss Garter
$5.22
Time Remaining: 23h 28m
Buy It Now for only: $5.22

Bridal Garter Wedding Garter Bright Yellow on White Garter Bow
Bridal Garter Wedding Garter Bright Yellow on White Garter Bow
$18.99
Time Remaining: 1d 35m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Set Bright Yellow on White Bow  Hearts Charm
Bridal Garter Wedding Garter Set Bright Yellow on White Bow Hearts Charm
$29.99
Time Remaining: 1d 1h 47m
Buy It Now for only: $29.99

Bridal Garter Wedding Garter Bright Yellow Satin on White Bow
Bridal Garter Wedding Garter Bright Yellow Satin on White Bow
$13.99
Time Remaining: 1d 2h 14m
Buy It Now for only: $13.99

DOUBLE HEART Wedding Garter Set BABY PINK White Garter
DOUBLE HEART Wedding Garter Set BABY PINK White Garter
$17.05
Time Remaining: 1d 3h 31m
Buy It Now for only: $17.05

Bridal Garter Wedding Garter Mint Green on Ivory Satin Bow  Hearts Charm
Bridal Garter Wedding Garter Mint Green on Ivory Satin Bow Hearts Charm
$13.99
Time Remaining: 1d 6h 33m
Buy It Now for only: $13.99

Wedding Elegant Wedding Garter White Double Heart New Wedding Supplies
Wedding Elegant Wedding Garter White Double Heart New Wedding Supplies
$9.99
Time Remaining: 1d 6h 53m
Buy It Now for only: $9.99

Double Heart Lavender White Wedding Garters Prom
Double Heart Lavender White Wedding Garters Prom
$20.61
Time Remaining: 1d 7h 3m
Buy It Now for only: $20.61

With all my Heart Ivory Crystal Linked Hearts Garter
With all my Heart Ivory Crystal Linked Hearts Garter
$7.36
Time Remaining: 1d 7h 14m
Buy It Now for only: $7.36

Bridal Garter Wedding Garter Smoke Blue on Ivory Lace Bow  Hearts Charm
Bridal Garter Wedding Garter Smoke Blue on Ivory Lace Bow Hearts Charm
$18.99
Time Remaining: 1d 7h 14m
Buy It Now for only: $18.99

Royal Blue and White Wedding Prom garter set with Rhinestone Hearts
Royal Blue and White Wedding Prom garter set with Rhinestone Hearts
$19.99
Time Remaining: 1d 7h 58m
Buy It Now for only: $19.99

NEW Sexy Ivory Blue Wedding Garter Select single set reg plus size30 charms
NEW Sexy Ivory Blue Wedding Garter Select single set reg plus size30 charms
$19.45
Time Remaining: 1d 10h 31m
Buy It Now for only: $19.45

Double Heart Wedding Garters Peach White Prom
Double Heart Wedding Garters Peach White Prom
$19.75
Time Remaining: 1d 10h 43m
Buy It Now for only: $19.75

Wedding or Prom Garter Handmade White Blue Colored With Heart Charm
Wedding or Prom Garter Handmade White Blue Colored With Heart Charm
$13.00
Time Remaining: 1d 11h 34m
Buy It Now for only: $13.00

Swarovski heart lace garter Marriage wedding bride dress blue turquoise pink
Swarovski heart lace garter Marriage wedding bride dress blue turquoise pink
$12.99
Time Remaining: 1d 11h 37m

Baltimore Ravens Wedding Garter Set Fabric Sport Double Heart Football Charm
Baltimore Ravens Wedding Garter Set Fabric Sport Double Heart Football Charm
$23.99
Time Remaining: 1d 12h 26m
Buy It Now for only: $23.99

DOUBLE HEART Wedding Garters Hot Pink Black Prom
DOUBLE HEART Wedding Garters Hot Pink Black Prom
$20.60
Time Remaining: 1d 13h 22m
Buy It Now for only: $20.60

DOUBLE HEART Wedding garters Turquoise Garter prome and others event
DOUBLE HEART Wedding garters Turquoise Garter prome and others event
$20.50
Time Remaining: 1d 15h 47m
Buy It Now for only: $20.50

SWAROVSKI HEARTS BURGUNDY Wedding Garter Garters Set
SWAROVSKI HEARTS BURGUNDY Wedding Garter Garters Set
$14.95
Time Remaining: 1d 16h 3m
Buy It Now for only: $14.95

SWAROVSKI DOUBLE HEART IVORY WEDDING GARTER GARTERS SET
SWAROVSKI DOUBLE HEART IVORY WEDDING GARTER GARTERS SET
$14.95
Time Remaining: 1d 16h 17m
Buy It Now for only: $14.95

SWAROVSKI DOUBLE HEART BROWN WEDDING GARTER GARTERS SET
SWAROVSKI DOUBLE HEART BROWN WEDDING GARTER GARTERS SET
$14.95
Time Remaining: 1d 16h 18m
Buy It Now for only: $14.95

SWAROVSKI HEARTS ROYAL BLUE WEDDING GARTER GARTERS SET
SWAROVSKI HEARTS ROYAL BLUE WEDDING GARTER GARTERS SET
$14.95
Time Remaining: 1d 16h 20m
Buy It Now for only: $14.95

SWAROVSKI DOUBLE HEARTS RED WEDDING GARTER GARTERS SET
SWAROVSKI DOUBLE HEARTS RED WEDDING GARTER GARTERS SET
$14.95
Time Remaining: 1d 16h 22m
Buy It Now for only: $14.95

SWAROVSKI DOUBLE HEART PURPLE WEDDING GARTER GARTERS
SWAROVSKI DOUBLE HEART PURPLE WEDDING GARTER GARTERS
$14.95
Time Remaining: 1d 16h 24m
Buy It Now for only: $14.95

GARTER BELT SATIN BOW With A HEART Bridal Wedding Accessory NEW IN BOX
GARTER BELT SATIN BOW With A HEART Bridal Wedding Accessory NEW IN BOX
$19.99
Time Remaining: 1d 17h 38m
Buy It Now for only: $19.99

Hot Pink White Wedding Garter Double Heart Prom
Hot Pink White Wedding Garter Double Heart Prom
$17.95
Time Remaining: 1d 18h 14m
Buy It Now for only: $17.95

Double Hearts Theme Guest Book
Double Hearts Theme Guest Book
$27.50
Time Remaining: 1d 19h 14m
Buy It Now for only: $27.50

NEW Sexy Lavender White Wedding Garter SELECT SingleSetRegPlus Size Charm
NEW Sexy Lavender White Wedding Garter SELECT SingleSetRegPlus Size Charm
$20.60
Time Remaining: 1d 21h 6m
Buy It Now for only: $20.60

Bridal Garter Wedding Garter Set Iris Lavender on Ivory Bow  Hearts Charm
Bridal Garter Wedding Garter Set Iris Lavender on Ivory Bow Hearts Charm
$29.99
Time Remaining: 2d 1h 31m
Buy It Now for only: $29.99

Bridal Garter Wedding Garter Iris Lavender on Ivory Satin Bow
Bridal Garter Wedding Garter Iris Lavender on Ivory Satin Bow
$13.99
Time Remaining: 2d 2h 16m
Buy It Now for only: $13.99

Bridal Garter Wedding Garter Iris Lavender on Ivory Lace Bow
Bridal Garter Wedding Garter Iris Lavender on Ivory Lace Bow
$18.99
Time Remaining: 2d 2h 17m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Fuchsia Pink Satin on White Bow  Hearts Charm
Bridal Garter Wedding Garter Fuchsia Pink Satin on White Bow Hearts Charm
$13.99
Time Remaining: 2d 5h 27m
Buy It Now for only: $13.99

Bridal Garter Wedding Garter Fuchsia Pink on White Garter Bow
Bridal Garter Wedding Garter Fuchsia Pink on White Garter Bow
$18.99
Time Remaining: 2d 6h 25m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Set Fuchsia Pink on White Bow  Hearts Charm
Bridal Garter Wedding Garter Set Fuchsia Pink on White Bow Hearts Charm
$29.99
Time Remaining: 2d 7h 29m
Buy It Now for only: $29.99

Elegant Double Heart Hot PINK Black Garter Prom
Elegant Double Heart Hot PINK Black Garter Prom
$17.05
Time Remaining: 2d 7h 52m
Buy It Now for only: $17.05

New Ivory Satin Garter Heart Ribbon Rhinestone Bridal Accesories
New Ivory Satin Garter Heart Ribbon Rhinestone Bridal Accesories
$5.35
Time Remaining: 2d 7h 55m
Buy It Now for only: $5.35

White bridal garter with Blue Heart
White bridal garter with Blue Heart
$6.30
Time Remaining: 2d 8h 6m
Buy It Now for only: $6.30

Double Heart Wedding Garters Antique Whi Black Prom
Double Heart Wedding Garters Antique Whi Black Prom
$15.90
Time Remaining: 2d 8h 27m
Buy It Now for only: $15.90

Blue Crush Wedding Garter Set with Crystal Heart Bridal Garters
Blue Crush Wedding Garter Set with Crystal Heart Bridal Garters
$18.00
Time Remaining: 2d 9h 57m

Double Heart Wedding Garter Set White Bridal Garter Free Garter
Double Heart Wedding Garter Set White Bridal Garter Free Garter
$7.00
Time Remaining: 2d 10h 24m

Dallas Cowboys Silver Organza Wedding Garter Set Double Heart Football Charm
Dallas Cowboys Silver Organza Wedding Garter Set Double Heart Football Charm
$23.99
Time Remaining: 2d 10h 31m
Buy It Now for only: $23.99

White Satin Garter with White Organza Trim and Silver Hearts in Center NEW
White Satin Garter with White Organza Trim and Silver Hearts in Center NEW
$6.50
Time Remaining: 2d 11h 5m
Buy It Now for only: $6.50

SWAROVSKI DOUBLE HEART Wedding Garters PURPLE TURQUOISE
SWAROVSKI DOUBLE HEART Wedding Garters PURPLE TURQUOISE
$18.95
Time Remaining: 2d 12h 7m
Buy It Now for only: $18.95