CURATED READING PATHS
Types of whales
Explore baleen and toothed whales, with species profiles on feeding methods, migration, sound, Arctic adaptations and the limits of population comparisons.
Explore baleen and toothed whales, with species profiles on feeding methods, migration, sound, Arctic adaptations and the limits of population comparisons.
Animal profiles
Blue whales: enormous bodies supported by tiny prey ↗
Blue whales are baleen whales whose size is sustained by krill-rich feeding patches. Their expandable throat pleats take in prey-bearing water, while baleen retains food as water drains. Tracking off California shows feeding effort changes with prey density and dive constraints.
Animal profiles
Humpback whales: songs, bubble nets and migration ↗
Humpbacks feed on krill and small schooling fishes, sometimes using bubbles to concentrate prey before lunging. Their fluke markings support photo-identification, while hydrophones record song and presence. Migration routes and feeding tactics vary by population and context.
Animal profiles
Sperm whales: echolocation, deep dives and squid ↗
Sperm whales use returning echoes to find prey in dark water, and rapid click buzzes are associated with close-range capture attempts. NOAA describes representative dives around 2,000 feet and 45 minutes; those figures are not fixed limits for every whale.
Animal profiles
Gray whales: bottom feeding and different migration routes ↗
Gray whales feed in more than one way, but many forage by drawing sediment and bottom-dwelling invertebrates into the mouth. Eastern North Pacific migration patterns also vary: some whales feed along the coast through summer instead of traveling to Arctic feeding grounds.
Animal profiles
North Atlantic right whales: identifying a critically pressured whale ↗
North Atlantic right whales have a stocky body without a dorsal fin and pale callosity patterns used for photo-identification. Entanglement, vessel strikes and poor surface visibility complicate recovery, while US waters carry a 500-yard approach restriction.
Animal profiles
Bowhead whales: Arctic adaptations and evidence of long lives ↗
Bowheads combine a thick insulating blubber layer, a large skull, and long baleen with seasonal movement around Arctic sea ice. Evidence suggests some live for centuries, but several independent methods estimate age, and none provides an exact birthday or known maximum lifespan.
Animal profiles
Fin whales: asymmetric markings and fast baleen feeding ↗
Fin whales combine a streamlined body and far-back hooked dorsal fin with a strikingly uneven lower-jaw color pattern. Their expandable throat and baleen support rapid lunge feeding, while prey, habitat use and seasonal movements vary across ocean regions.
Animal profiles
Minke whales: small baleen whales with regional differences ↗
“Minke whale” covers two recognized species with different regional patterns, prey associations and habitats. Visible flipper markings can help distinguish forms, while lunge feeding, throat grooves and baleen explain how these relatively small rorquals capture prey.
Animal profiles
Belugas: flexible necks, changing color and Arctic sound ↗
Belugas combine an unusually mobile neck, a low dorsal ridge and a flexible forehead melon that shapes echolocation signals. Their color changes as calves mature, while habitat, movement and conservation status differ among populations.
Animal profiles
Narwhals: what a tusk can tell us and what remains uncertain ↗
A narwhal’s tusk is an unusual upper-jaw tooth, most often seen in males, but it is not a dependable sex test. Recent observations document fish-directed use while leaving the tusk’s full sensory, feeding, and social roles unresolved.