nt, another behind and below dorsal
fin; visible on swimming animal.
Beak short, sometimes brushed with white blaze.
May ride bow waves.
Distribution Newfoundland north in summer, Cape Cod north in
winter; common close to shore at Cape Cod in spring.

[Sidenote: ATLANTIC BOTTLENOSED DOLPHIN

_Tursiops truncatus_

p. 128]

Body to 12 feet (3.7 m) long.
Body dark gray on back; lighter gray on sides; belly white to
pink.
Snout robust and short.
Dorsal fin tall; back curved.
Ride bow waves; often turn head downwards or to the sides as they
do so.
Distribution temperate and tropical, usually within 20 miles of
shore (often in bays, lagoons, and larger rivers) but extending
off the continental shelves.

[Sidenote: GUIANA DOLPHIN

_Sotalia guianensis_

p. 132]

Body to approximately 5.6 feet (1.7 m) long.
Body steel blue to dark brown on back; white on belly.
Dorsal fin nearly triangular; curves only slightly backward.
Distribution in Lake Maracaibo and the rivers of Guiana and in
the nearshore coastal waters of northeastern portion of South
America.

[Sidenote: ROUGH-TOOTHED DOLPHIN

_Steno bredanensis_

p. 135]

Body to about 8 feet (2.4 m) long.
Body dark gray to purplish gray on back with white or pink
blotches on sides; belly white.
Body frequently shows numerous white scars.
Head tapers gradually; beak long and slender; no clear separation
of beak from forehead.
May ride bow waves.
Distribution in deep tropical waters.

[Sidenote: PYGMY KILLER WHALE

_Feresa attenuata_

p. 138]

Body to 8-9 feet (2.4-2.7 m) long.
Body black with white belly patch which may extend up sides in
area of anus.
Head rounded; no beak; lips white; lower jaw and chin may be
white.
Dorsal fin to 15 inches (38 cm) tall, falcate; located near
midpoint of back.
Distribution tropical and subtropical.

[Sidenote: MANY-TOOTHED BLACKFISH

_Peponocephala electra_

p. 142]

Body to about 9 feet (2.7 m) long.
Body black on back; light gray on belly.
Head rounded; no beak; underslung jaw; lips white.
Dorsal fin to 10 inches (25.4 cm), tall, distinctly back curved.
Distribution tropical (not yet reported in western North
Atlantic).

[Sidenote: PYGMY SPERM WHALE

_Kogia breviceps_

p. 144]

Body to about 11 feet (3.4 m) long.
Body dark steel gray on back; lighter gray on sides; pinkish to
w