Aerial Photos Of J-pod Socialising 

tsuki oh how i love you

lets lean on a pipe with mama (x)

Japanese Sea Lion

Gone before we could truly know them.

Zalophus japonicus memorial • extinct

Last confirmed sighting 1951

Declared extinct by ICUN 1994.

Originally considered a subspecies of Californian sea lions, later were confirmed to be a separate species in 2003.

Extinction due to over hunting & habitat destruction.

The Japanese sea lion was a species of pinniped found in the western North Pacific, including Japan and the Korean Peninsula. They typically resided on open beaches, and occasionally in rocky areas. They also often would rest in caves.

Rare footage of Japanese Sea Lions

Japanese sea lions were victims of both over hunting and habitat destruction. They were primarily hunted for oil, with other parts being used for medicine and other goods. The commercial harvest of them is considered to be a primary factor in their extinction.

Habitat destruction, particularly destruction brought on by WW2 submarines is also believed to have played a role in their extinction.

Along with the Caribbean Monk Seal, these two make up the only pinnipeds to go extinct in modern times.

Today's Seal Is: My Watchful Mama

California sea lion

// full illustration for @seaunseenzine vol.3 // this piece is on Inprnt

lets be muddy with mama

kissy from mama

please stop calling the california sea lions that are acting abnormally “demonic”. they are experiencing domoic acid toxicosis. domoic acid (DA) is a neurotoxin that is made by an algae called pseudo-nitzschia australis. fish eat the algae and the sea lions eat the fish. this buildup of DA in their system is what causes the behaviours we’re seeing. symptoms of DA toxicosis include: lethargy, disorientation, unpredictable behaviour, seizures, brain damage, and eventually death.

as far as we know, there have only been two unprovoked sea lion attacks on beaches. the vast majority of sea lions with DA toxicosis are not aggressive unless provoked. they are disoriented and they are acting out of fear.

DA is naturally occurring, but the algal blooms of pseudo-nitzschia australis have been increasing due to rising temperatures from climate change and water pollution. we are doing this to them.

affected sea lions seem to have pretty much a 50% chance of survival with treatment. they need IV fluids to flush out the toxin and some will need seizure medication as well. the marine mammal care center is completely overwhelmed with the amount of sick sea lions they are taking in and they need funding to keep up. you can donate to them here.

always stay at least 45 meters / 50 yards away from marine mammals! it protects both them and us!

Good News Network

Humpback Whales Are Singing More: Number of Songs Has Doubled as Food Sources Became More Abundant

Eavesdropping on whale songs over 6 years shows the number of days humpbacks have been singing has nearly doubled–with their food source.

"Eavesdropping on whale songs over the last six years is providing new information vital to answering questions about these giants of the ocean.

The number of whale songs detected is associated with shifting food sources, according to the California scientists—and the number of days humpbacks have been singing has nearly doubled.

When monitoring baleen whale songs in the Pacific Ocean, researchers found year-to-year variations correlated with changes in the availability of the species they forage on.

In vast oceans, monitoring populations of large marine animals can be a “major challenge” for ecologists, explained Dr. John Ryan, a biological oceanographer at the Monterey Bay Aquarium Research Institute in California (MBARI).

Their team deployed underwater microphones called hydrophones to study and track baleen whales, which communicate over long distances through sound.

“Surprisingly, the acoustic behavior of baleen whales provides insights about which species can better adapt to changing ocean conditions,” said Dr. Ryan, a lead author of the study.

They also monitored songs from blue, fin, and humpback whales off the West Coast of the U.S. to see what the song data could reveal about the health of their ecosystem.

The findings, published in the journal PLOS One, showed “large” year-to-year variations in whale song detection.

“The amount of humpback whale song continually increased, with their songs being detected on 34% of days at the beginning of the study and rising to 76% of days after six years,” said Dr. Ryan.

“These increases consistently tracked improved foraging conditions for humpback whales across all study years—large increases in krill abundance, followed by large increases in anchovy abundance.

“In contrast, blue and fin whale song rose primarily during the years of increasing krill abundance.

“This distinction of humpback whales is consistent with their ability to switch between dominant prey. An analysis of skin biopsy samples confirmed that changes had occurred in the whales’ diets.”

He explained that other factors, including the local abundance of whales, may have contributed to patterns in song detections observed in some years, but changes in foraging conditions were the most consistent factor.

“Overall, the study indicates that seasonal and annual changes in the amount of baleen whale song detected may mirror shifts in the local food web.”

WHALES ON THE COMEBACK TRAIL: • Gray Whale, Extinct for Centuries in Atlantic, Is Spotted in Cape Cod • Sighting of Many Blue Whales Around Seychelles is First in Decades – ‘Phenomenal’ • Majestic Sei Whales Reappear in Argentine Waters After Nearly a Century

“The results suggest that an understanding of the relationship between whale song detection and food availability may help researchers to interpret future hydrophone data, both for scientific research and whale management efforts”, which could better protect endangered species."

-via Good News Network, March 1, 2025

J62!!!

source: center for whale research