Order Cetacea
Southern Right WhaleFamily:Balaenidae
Photo: robdownunder@flickr.com License: Creative Commons attrib/noncom/noderiv
Humpback WhaleFamily:Balaenopteridae
Photo: NOAA@Wikimedia Commons License: Public Domain
Humpback WhaleFamily:Balaenopteridae
Photo: Michael Dawes@flickr.com License: Creative Commons attrib/noncom
Humpback WhaleFamily:Balaenopteridae
Chin with barnacles. Photo: zorankovacevic@flickr.com License: Creative Commons attrib/noncom/sharealike
Humpback WhaleFamily:Balaenopteridae
Photo: SparkyLeigh@flickr.com License: Creative Commons attrib/noncom/noderiv
Gray WhaleFamily:Eschrichtiidae
Photo: SparkyLeigh@flickr.com License: Creative Commons attrib/noncom/noderiv
Gray WhaleFamily:Eschrichtiidae
Photo: Minette Layne@flickr.com License: Creative Commons attrib/noncom
DolphinsFamily:Delphinidae
Playing in surf. Photo: ms4jah@flickr.com License: Creative Commons attrib/noncom
DolphinFamily:Delphinidae
Photo: Leo Reynolds@flickr.com License: Creative Commons attrib/noncom/sharealike
OrcaFamily:Delphinidae
Photo: SparkyLeigh@flickr.com License: Creative Commons attrib
OrcaFamily:Delphinidae
Photo: SparkyLeigh@flickr.com License: Creative Commons attrib/noncom/noderiv
Finless Black PorpoiseFamily:Phocoenidae
Photo: ori2uru@flickr.com License: Creative Commons attrib
BelugaFamily:Monodontidae
With calf. Photo: eyesplash Mikul@flickr.com License: Creative Commons attrib/noncom
BelugaFamily:Monodontidae
Photo: akahodag@flickr.com License: Creative Commons attrib/noncom/noderiv
BelugaFamily:Monodontidae
Photo: sillydog@flickr.com License: Creative Commons attrib/noncom/sharealike
NarwhalFamily:Monodontidae
Showing "tusks": enlarged upper incisors. Photo: NIST@Wikimedia Commons License: Public domain
Sperm WhaleFamily:Physeteridae
Photo: pablo caceres c@flickr.com License: Creative Commons attrib/noncom/noderiv
Amazonian River DophinFamily:Iniidae
With a Plecostomus Photo: Dennis Otten@Wikimedia Commons License: GNU Free Documentation License
11 Families, 84 Species
Whales, dolphins, porpoises
Worldwide
Pectoral appendages modified as fins, nostrils on dorsal surface of head
20 to 200,000 kg.