Cephalopod lovers, meet the stubby bobtail (Rossia pacifica)! With a mantle length of only up to 2 in (5 cm), this tiny critter typically spends its days buried beneath the sand, emerging at night to feed. Shrimp comprise nearly 80% of this species’ diet, but it also preys on small fishes and even other cephalopods. It can be found in coastal waters from Japan to California.
I heard that sharks and rays are super closely related. Are skates an approximate bridging “group” between them? Or are they outside of both groups
They are all really closely related- there in all the same class known as Chondrichthyes, or cartilaginous fish. Sharks evolved first, approximately 350 million years ago during the Carboniferous period. Skates and ray came around at approximately the same time as each other 150 million years ago during the Jurassic period.
So skates aren't really a "bridging group", they're actually most closely related to rays!
How to tell someone you know nothing about evolution without saying you know nothing about evolution (2/?)
"Whales never walked on land. It's not possible for whales to have evolved! An animal couldn't survive while having limbs that are partly for land and partly for water."
a) We know for a fact that whales used to be landbound because they have an earbone that isn't found on any other animal, meaning we can trace whale evolution by checking if that bone is present in the fossil.
This is the earliest-known animal with the bone that only cetaceans have:
b) Here's Rodhocetus, an early whale:
Its paws still looked like paws for land but would have been too weak to hold its weight out of water.
Watch a man make friends with sperm whales — bringing us one step closer to communicating with these beautiful beasts of the deep. Enjoy the full-length 2024 PBS Nature documentary at Patrick and the Whale.
Did you know? Blue-ringed octopuses (members of the genus Hapalochlaena) are among the world’s deadliest cephalopods. Found in coral reefs in the Indian and Pacific oceans, these critters typically measure less than 8 in (20.3 cm) long. But, they pack a venomous bite that is potent enough to instantly paralyze, and even kill, a human being.
Utagawa Kuniyoshi, Tiger Shark, Tametomo and Tengu, Originally Edo era, this edition was made at an unknown date
Utagawa Kuniyoshi, Triptych: The Former Emperor [Sutokul, from Sanuki Sends His Retainers to Rescue Tametomo (Sanuki no in kenzoku o shite Tametomo o sukuu zu)
the other piece I made on trash that I insisted on using.
It's smoll, it's mako sharks and it was almost salvageable.
Like... the paper buckled immediately, took water but not pigment and I had used some resist, and it just tore it all up.
So now it has this texture because in order to not just throw it all out. I went over the whole piece with medium mixed with mica ~magic medium~
It gave me a surface to work with and it ended up looking pretty cool! So I'm glad I didn't give up.
We almost have 100 followers on the kickstarter now. I'm nervous but hopeful about it~
Apologies again for cellphone photos~