Category: animal behavior

cedorsey:© Video Credit Baby whales don’t know…

cedorsey:

© Video Credit

Baby whales don’t know how to breathe, so their mothers have to hold them up, close to the surface, until they learn. 

essenceofnatvre: planetearthtv Every year, one…

essenceofnatvre:

planetearthtv

Every year, one of the largest migrations in the world happens off the east coast of South Africa, the sardine run. Reports from spotter planes have mentioned shoals as big as 7 km long and 1.5 km wide (4.3 x .9 mi), usually accompanied by dolphins in their thousands. Here a baleen whale takes its turn on the banquet.

🎥 & Caption by @oceanx @brocqmaxey

Bryde’s Whale fun fact: when swimming, they may abruptly change direction, for no apparent reason. Their breathing pattern is irregular too. Science has no explanation for Bryde’s whales being the way they are.

bogleech: apparently one whale years ago was …

bogleech:

apparently one whale years ago was observed doing this for hours and now more and more whales in the area are seen copying it so we think it’s a whole new behavior and it seems to be a response to shrinking food sources.

Instead of expending any energy actively hunting, the whale just holds its mouth open wherever fish are being hunted by birds. To escape the birds, the fish try to hide in the whale’s mouth because it’s a darker area that looks like shelter.

…They’re turning into giant, sea-mammal pitcher plants.

https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.12557?referrer_access_token=bXLTS5BeSw_vlIKHkM0bYIta6bR2k8jH0KrdpFOxC654HjreJ8D19K86UreR5JPsSRb0CuGhiJSV1L1ht-N1Gf_K_1a9MREFzQGU9oJDNctsKDin_HXcYEdsLg3EbcTl

Do aquatic mammals have eyelids? Or are their …

Do aquatic mammals have eyelids? Or are their eyes more like fish so they never close?

They do! I’m gonna talk about dolphins and whales because, as cute as the eyes of other aquatic mammals may be, I don’t know much about them. 

Unlike ours, the eyelids of cetaceans are chubby, they are really thick, but that’s no issue to them, because they don’t close them often. They don’t need to blink as much as we do. When they do blink, they spread these jelly-like tears all over the eyes to protect them. The tears are so viscous they can cover the eye for a long time. 

They shut their eyelids when they sleep as well, but in that case they tend to only close one eye. Whales and dolphins only sleep with one half of the brain, while the other half stays awake. They keep one eye open, so they can stare deep into your soul even while they nap.

image

Gray Whale eye by Tarnya Hall

Pregnant humpback whale taking a nap 💙 Clark …

Pregnant humpback whale taking a nap 💙 Clark Little

last-tambourine:Photo by Franco Banfi Synchron…

last-tambourine:

Photo by Franco Banfi
Synchronized Sleepers, sperm whales
Caribbean Sea

Conversation

me making small talk at social gatherings: I think we should talk about how cool bubble-net feeding is

catsbeaversandducks: Whales rolling around wi…

catsbeaversandducks:

Whales rolling around with pacific white sided dolphin.

Via Dana Point Harbor

worldofwhales: Whales rely heavily on their se…

worldofwhales:

Whales rely heavily on their sense of hearing. The deep, dark waters they live in make it difficult for them to rely on other senses, so they evolved to become extremely sensitive to the sounds that surround them.

They are social animals who communicate through incredibly elaborated systems of sound. They recognise each other thanks to sounds, they use those sounds to tell each other things, noises warn them when a danger is coming and they even find food thanks to that stunning sense of hearing they have. 

Noise pollution makes all of this impossible for them. It makes it impossible to recognise or understand their world. It’s physically painful to them and it overshadows their voices.  

image

Exactly why whales and dolphins strand is not fully known but factors can include sickness, navigational error, geographical features, a rapidly falling tide, being chased by a predator, or extreme weather.

[read full article on NDTV]

Those are all hypotheses and sadly hypotheses are all we have when it comes to understanding this phenomenon. But I would like to mention yet another hypothesis, or better, one reason why “navigational error” might occur.

Noise pollution.

lifeunderthewaves: Sleeping whales (taken und…

lifeunderthewaves:

Sleeping whales (taken under permit) by Izzysan Very rare shot of a pod of sleeping sperm whales with calves, the adults formed a ring around the juveniles,