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.

New Sexy Red Ivory Wedding Garter 30 Charms to Select
New Sexy Red Ivory Wedding Garter 30 Charms to Select
$14.91
Time Remaining: 2h 14m
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
$20.36
Time Remaining: 4h 3m
Buy It Now for only: $20.36

FREE SH New Sexy Hot Pink Black Wedding Garter Love
FREE SH New Sexy Hot Pink Black Wedding Garter Love
$18.59
Time Remaining: 4h 39m
Buy It Now for only: $18.59

Swarovski Wedding Garter Garters Red Ivory Yellow Black
Swarovski Wedding Garter Garters Red Ivory Yellow Black
$16.95
Time Remaining: 5h 7m
Buy It Now for only: $16.95

Garter White Bridal Collection Satin Ribbon Band Rhinestone Double Heart Brooch
Garter White Bridal Collection Satin Ribbon Band Rhinestone Double Heart Brooch
$155.00
Time Remaining: 5h 38m
Buy It Now for only: $155.00

JOURNEY HEART IVORY SWAROVSKI WEDDING GARTER GARTERS
JOURNEY HEART IVORY SWAROVSKI WEDDING GARTER GARTERS
$16.95
Time Remaining: 5h 47m
Buy It Now for only: $16.95

Royal Blue Rhinestone Heart Wedding Garter Set Garters
Royal Blue Rhinestone Heart Wedding Garter Set Garters
$29.99
Time Remaining: 5h 50m
Buy It Now for only: $29.99

Garter Burlap Bridal Collection White Cotton Ruffle Heart Charm Tied with Twine
Garter Burlap Bridal Collection White Cotton Ruffle Heart Charm Tied with Twine
$128.50
Time Remaining: 6h 6m
Buy It Now for only: $128.50

White  Blue Lace WEDDING DAY Garter with Heart Design One size fits most
White Blue Lace WEDDING DAY Garter with Heart Design One size fits most
$1.69
Time Remaining: 6h 41m
Buy It Now for only: $1.69

DOUBLE HEART YELLOW SWAROVSKI WEDDING Garter Garters
DOUBLE HEART YELLOW SWAROVSKI WEDDING Garter Garters
$14.95
Time Remaining: 7h 29m
Buy It Now for only: $14.95

Purple Heart Wedding Garter Set
Purple Heart Wedding Garter Set
$18.00
Time Remaining: 8h 23m
Buy It Now for only: $25.00

NEW Turquoise Royal Blue White Wedding Garter Sel SingleSetReg+ Size Charm
NEW Turquoise Royal Blue White Wedding Garter Sel SingleSetReg+ Size Charm
$20.36
Time Remaining: 9h 27m
Buy It Now for only: $20.36

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: 13h 18m
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: 13h 22m
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: 13h 28m
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: 13h 53m
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: 14h 3m
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: 14h 24m
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: 14h 26m
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: 14h 29m
Buy It Now for only: $5.22

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: 14h 33m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Bright Yellow Satin on White Bow
Bridal Garter Wedding Garter Bright Yellow Satin on White Bow
$13.99
Time Remaining: 14h 35m
Buy It Now for only: $13.99

Bridal Garter Wedding Garter Bright Yellow on White Garter Bow
Bridal Garter Wedding Garter Bright Yellow on White Garter Bow
$18.99
Time Remaining: 15h 34m
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: 16h 40m
Buy It Now for only: $29.99

DOUBLE HEART Wedding Garter Set BABY PINK White Garter
DOUBLE HEART Wedding Garter Set BABY PINK White Garter
$18.00
Time Remaining: 18h 32m
Buy It Now for only: $18.00

Bridal Garter Wedding Garter Iris Lavender on White Garter Bow
Bridal Garter Wedding Garter Iris Lavender on White Garter Bow
$18.99
Time Remaining: 18h 50m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Fuchsia Pink on White Garter Bow
Bridal Garter Wedding Garter Fuchsia Pink on White Garter Bow
$18.99
Time Remaining: 18h 56m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Bright Yellow on Ivory Satin Bow
Bridal Garter Wedding Garter Bright Yellow on Ivory Satin Bow
$13.99
Time Remaining: 20h 38m
Buy It Now for only: $13.99

Bridal Garter Wedding Garter Iris Lavender Satin on White Bow
Bridal Garter Wedding Garter Iris Lavender Satin on White Bow
$13.99
Time Remaining: 20h 39m
Buy It Now for only: $13.99

Double Heart Lavender White Wedding Garters Prom
Double Heart Lavender White Wedding Garters Prom
$20.37
Time Remaining: 22h 4m
Buy It Now for only: $20.37

With all my Heart Ivory Crystal Linked Hearts Garter
With all my Heart Ivory Crystal Linked Hearts Garter
$7.36
Time Remaining: 22h 15m
Buy It Now for only: $7.36

Adjustable Lace Heart Accent Adjust Garter with Toss Away Lovely keepsake item
Adjustable Lace Heart Accent Adjust Garter with Toss Away Lovely keepsake item
$999.00
Time Remaining: 23h 15m
Buy It Now for only: $999.00

Ivory Vintage Heart Leg Garter
Ivory Vintage Heart Leg Garter
$12.00
Time Remaining: 1d 58m
Buy It Now for only: $12.00

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
$18.37
Time Remaining: 1d 1h 33m
Buy It Now for only: $18.37

Double Heart Wedding Garters Peach White Prom
Double Heart Wedding Garters Peach White Prom
$18.66
Time Remaining: 1d 1h 45m
Buy It Now for only: $18.66

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 2h 35m
Buy It Now for only: $13.00

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 3h 27m
Buy It Now for only: $23.99

DOUBLE HEART Wedding Garters Hot Pink Black Prom
DOUBLE HEART Wedding Garters Hot Pink Black Prom
$20.36
Time Remaining: 1d 4h 24m
Buy It Now for only: $20.36

Pittsburgh Penguins Fabric Logo Wedding Garters Hockey Double Heart Prom Bridal
Pittsburgh Penguins Fabric Logo Wedding Garters Hockey Double Heart Prom Bridal
$24.99
Time Remaining: 1d 5h 18m
Buy It Now for only: $24.99

Cathy s Concepts white ruffle with Swarovski crystal hearts garter
Cathy s Concepts white ruffle with Swarovski crystal hearts garter
$25.00
Time Remaining: 1d 6h 11m
Buy It Now for only: $25.00

Superman Logo Fabric Jewel Wedding Bridal Garter Set Prom Double Heart Charm
Superman Logo Fabric Jewel Wedding Bridal Garter Set Prom Double Heart Charm
$23.99
Time Remaining: 1d 6h 37m
Buy It Now for only: $23.99

SWAROVSKI HEARTS BURGUNDY Wedding Garter Garters Set
SWAROVSKI HEARTS BURGUNDY Wedding Garter Garters Set
$14.95
Time Remaining: 1d 7h 4m
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 7h 18m
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 7h 19m
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 7h 23m
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 7h 26m
Buy It Now for only: $14.95

Wedding Ceremony Bridal Party Sexy White Brides Satin Lace Heart Garter
Wedding Ceremony Bridal Party Sexy White Brides Satin Lace Heart Garter
$4.48
Time Remaining: 1d 7h 38m
Buy It Now for only: $4.48

Blue Crush Wedding Garter Set with Crystal Heart Bridal Garters
Blue Crush Wedding Garter Set with Crystal Heart Bridal Garters
$18.00
Time Remaining: 1d 8h 45m

Hot Pink White Wedding Garter Double Heart Prom
Hot Pink White Wedding Garter Double Heart Prom
$18.95
Time Remaining: 1d 9h 16m
Buy It Now for only: $18.95

Gold Sequin Heart on White Wedding Garter Bridal Garter
Gold Sequin Heart on White Wedding Garter Bridal Garter
$6.49
Time Remaining: 1d 10h 17m
Buy It Now for only: $8.99

NEW Sexy Lavender White Wedding Garter SELECT SingleSetRegPlus Size Charm
NEW Sexy Lavender White Wedding Garter SELECT SingleSetRegPlus Size Charm
$20.36
Time Remaining: 1d 12h 8m
Buy It Now for only: $20.36

Bridal Garter Wedding Garter Iris Lavender on Ivory Lace Bow
Bridal Garter Wedding Garter Iris Lavender on Ivory Lace Bow
$18.99
Time Remaining: 1d 14h 41m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Bright Yellow on Ivory Lace Bow
Bridal Garter Wedding Garter Bright Yellow on Ivory Lace Bow
$18.99
Time Remaining: 1d 14h 43m
Buy It Now for only: $18.99

Bridal Garter Wedding Garter Apple Green on White Lace Bow  Hearts Charm
Bridal Garter Wedding Garter Apple Green on White Lace Bow Hearts Charm
$18.99
Time Remaining: 1d 16h 13m
Buy It Now for only: $18.99

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: 1d 17h 23m
Buy It Now for only: $29.99

HOT PINK Black Lace Wedding Garter set Rhinestone heart Garters
HOT PINK Black Lace Wedding Garter set Rhinestone heart Garters
$26.99
Time Remaining: 1d 19h 41m
Buy It Now for only: $26.99

Elegant Double Heart Hot PINK Black Garter Prom
Elegant Double Heart Hot PINK Black Garter Prom
$18.00
Time Remaining: 1d 22h 53m
Buy It Now for only: $18.00

New Ivory Satin Garter Heart Ribbon Rhinestone Bridal Accesories
New Ivory Satin Garter Heart Ribbon Rhinestone Bridal Accesories
$6.99
Time Remaining: 1d 22h 57m
Buy It Now for only: $6.99

White bridal garter with Blue Heart
White bridal garter with Blue Heart
$7.00
Time Remaining: 1d 23h 7m
Buy It Now for only: $7.00

Double Heart Wedding Garters Antique Whi Black Prom
Double Heart Wedding Garters Antique Whi Black Prom
$15.10
Time Remaining: 1d 23h 29m
Buy It Now for only: $15.10

Ohio State OSU Buckeyes Logo Jewel Wedding Bridal Garter Set Double Heart Charm
Ohio State OSU Buckeyes Logo Jewel Wedding Bridal Garter Set Double Heart Charm
$22.99
Time Remaining: 2d 14m
Buy It Now for only: $22.99

Penn State Nittany Lions Wedding Garters Double Heart Charms Prom Football
Penn State Nittany Lions Wedding Garters Double Heart Charms Prom Football
$22.99
Time Remaining: 2d 33m
Buy It Now for only: $22.99

SWAROVSKI DOUBLE HEART Wedding Garters PURPLE TURQUOISE
SWAROVSKI DOUBLE HEART Wedding Garters PURPLE TURQUOISE
$18.95
Time Remaining: 2d 3h 8m
Buy It Now for only: $18.95

New Ivory Satin Organza Rhinestone Heart Wedding Garter
New Ivory Satin Organza Rhinestone Heart Wedding Garter
$5.99
Time Remaining: 2d 4h 21m
Buy It Now for only: $5.99

DOUBLE HEART Wedding garters ROYAL BLUE white Garter
DOUBLE HEART Wedding garters ROYAL BLUE white Garter
$26.99
Time Remaining: 2d 5h 44m
Buy It Now for only: $26.99

NEW Sexy Apple Purple Black Wedding Garter SELECT SingleSetReg+ SizeCharm
NEW Sexy Apple Purple Black Wedding Garter SELECT SingleSetReg+ SizeCharm
$16.36
Time Remaining: 2d 5h 53m
Buy It Now for only: $16.36

DOUBLE HEART SWAROVSKI BLUE Wedding Garter PROM Garters
DOUBLE HEART SWAROVSKI BLUE Wedding Garter PROM Garters
$14.95
Time Remaining: 2d 5h 59m
Buy It Now for only: $14.95

DOUBLE HEART BURGUNDY APPLE RED WEDDING GARTER GARTERS
DOUBLE HEART BURGUNDY APPLE RED WEDDING GARTER GARTERS
$14.95
Time Remaining: 2d 6h 1m
Buy It Now for only: $14.95

FREE SH New Sexy Blue Black White Wedding Garter Prom
FREE SH New Sexy Blue Black White Wedding Garter Prom
$18.99
Time Remaining: 2d 7h 22m
Buy It Now for only: $18.99

Garter Satin Lace Trim With Heart Baby Pink Wedding Garter Victoria Lynn
Garter Satin Lace Trim With Heart Baby Pink Wedding Garter Victoria Lynn
$1.99
Time Remaining: 2d 8h 53m
Buy It Now for only: $1.99

NEW Hot Pink White Wedding Garter SELECT SingleSetRegPlus SizeCharm
NEW Hot Pink White Wedding Garter SELECT SingleSetRegPlus SizeCharm
$20.36
Time Remaining: 2d 12h 36m
Buy It Now for only: $20.36

NEW Burgundy Black Wedding Garter SELECT SingleSetRegPlus SizeCharm
NEW Burgundy Black Wedding Garter SELECT SingleSetRegPlus SizeCharm
$20.36
Time Remaining: 2d 12h 46m
Buy It Now for only: $20.36

New Orleans Saints Fabric Wedding Toss Garter Football Double Heart Charm
New Orleans Saints Fabric Wedding Toss Garter Football Double Heart Charm
$13.99
Time Remaining: 2d 14h 57m
Buy It Now for only: $13.99

Seattle Seahawks Fabric Jewel Wedding Bridal Garter Set Prom Double Heart Charm
Seattle Seahawks Fabric Jewel Wedding Bridal Garter Set Prom Double Heart Charm
$23.99
Time Remaining: 2d 14h 57m
Buy It Now for only: $23.99

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 15h 40m
Buy It Now for only: $13.99

Bridal Garter Wedding Garter Teal on Ivory Satin Garter Bow  Hearts Charm
Bridal Garter Wedding Garter Teal on Ivory Satin Garter Bow Hearts Charm
$13.99
Time Remaining: 2d 15h 45m
Buy It Now for only: $13.99