Marine Mammalogy Midterm Madness - Species Diversity

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4 types of marine mammals

cetaceons, pinnipeds, sirenians, marine fissipeds

Order Carnivora

Otariidae (Eared seals) Family Phocidae (True seals) Odobenidae (Walrus) Ursidae (Polar Bears) Mustelidae (Otters)

Family Phocidae Canada examples

Harbour Seal (Phoca vitulina), Grey Seal (Halichoerus grypus), Ringed Seal (Pusa hispida), Bearded Seal (Erignathus barbatus), Harp Seal (Pagophilus groenlandicus), Hooded Seal (Cystophora cristata)

Family Otaridaee Canada Examples

Steller Sea Lion (Eumetopias jubatus) California Sea Lion (Zalophus californianus) Northern Fur Seal (Callorhinus ursinus)

Phocids vs otaarids difference breeding, locomotion, feeding, location

phocids ice mainly, otariids land, otaarids better on land, shallower dives, more temperate

Family Odobenidae

Walrus (Odobenus rosmarus)

suborder Mysticete families in canada

Family Balaenidae, Family Balaenopteridae, Family Eschrichtiidae

Family Balaenidae species in Canada

North Atlantic right whale (Eubalaena glacialis), North Pacific right whale (Eubalaena japonica), Bowhead whale (Balaena mysticetus)

Family Balaenidae features

right whale fam, no dorsal fin, bowed mouths, whaling whales,

Family Balaenopteridae features

ventral grooves, great whale family, streamlined, slender

Family balaenopteridae species

Humpback whale (Megaptera novaeangliae) minke whale

(Balaenoptera acutorostrata) Sei whale (Balaenoptera borealis), Fin whale (Balaenoptera physalus) Blue whale (Balaenoptera musculus)

Family Eschrichtiidae species

Gray whale (Eschrichtius robustus)

Suborder Odontoceti famalies

Kogiidae (pygmy/dwarf sperm), Monodontidae (narwhals), Ziphiidae (dolphins), Delphinidae (orcas+pilot whales), Delphinidae (dolphins), Phocoenidae (porpoise

Which odontocetes have their blowhole on the left side of their head

sperm whale pygmy, dwarf

Sperm whale latin name

Physeter macrocephalus

Family Kogiidae species

Pygmy sperm whale (Kogia breviceps) Dwarf sperm whale (Kogia sima)

Family Kogiidae trait

false gill

Family Monodontidae canada species

Narwhal (Monodon monoceros), Beluga, Belukha (Delphinapterus leucas)

Family Ziphiidae species

Goose Beaked whale (Ziphius cavirostris), Northern bottlenose whale (Hyperoodon ampallatus), Sowerby’s beaked whale (Mesoplodon bidens)

Dolphins vs porpoise

dolphins: conical teeth, pronounced snout, Asymmetrical skull, Falcate dorsal fin, Generally larger, Leaner, 36 species opposed to the 6 porpoises

Family Delphinidae species

Killer whale (Orcinus orca) Long-finned pilot whale (Globicephala melas) Short-finned pilot whale (Globicephala macrorhynchus)

Family odontoceti types

Common bottlenose dolphin (Tursiops truncatus) Striped dolphin (Stenella coeruleoalba) Common dolphin (Delphinus delphis) White-beaked dolphin (Lagenorhynchus albirostris) Atlantic white-sided dolphin (Lagenorhynchus acutus) Pacific white-sided dolphin (Lagenorhynchus obliquidens) Northern right whale dolphin (Lissodelphis borealis) Risso’s dolphin (Grampus griseus)

Family Phocoenidae

Harbor (Common) porpoise (Phocoena Phocoena) Dall’s (Dall) porpoise (Phocoenoides dalli)