Isaac Pesca (@isaacpesca.bsky.social)

@stephenking.bsky.social Sep 29, 2026, 7:51 PMReposted by @isaacpesca.bsky.social

Reading has become an endangered species. Which is half the problem with American political life. Maybe more than half. If you can't read, you can't think. Then you can fall for anything. The idea, for instance, that the truth is fake news.

@isaacpesca.bsky.social Sep 19, 2026, 4:04 PM

Spinning this masterpiece today—such well-crafted atmospheric soundscapes always bring me to different places. Thanks for your music, Mr. Ayloss! Spectral Lore - Gnosis. @infinitedreamscape.bsky.social

@sethf.bsky.social Sep 13, 2026, 3:28 PMReposted by @isaacpesca.bsky.social

Everyone had their own weird way of coping with the pandemic, and mine was photographing nudibranchs on the California coast. Fun to have been able to parlay that into a PNAS cover, and to have been part of such interesting work led by @isaacpesca.bsky.social & @drcraigmc.bsky.social! #nudibranch

A close-up of an aeolid nudibranch sea slug, Phidiana hiltoni, on a piece of kelp. The slug is translucent white with orange-banded rhinophores and gray cerata with pale orange tips.

@pnas.org Sep 10, 2026, 11:00 PMReposted by @isaacpesca.bsky.social

In this issue: Uncovering illegal wildlife trade routes, reconstructing the Jurassic forest soundscape, and exploring the neurobiology of how mice play follow the leader. In PNAS: https://ow.ly/jrS550ZM4rU

Pictured is the nudibranch Phidiana hiltoni, which is found on the California coast.
Image credit: Seth Finnegan.

@drcraigmc.bsky.social Sep 8, 2026, 5:37 PMReposted by @isaacpesca.bsky.social

When your postdoc @isaacpesca.bsky.social is so awesome they give him the cover of PNAS! Excellent photo by @sethf.bsky.social! And excellent coauthors of @pedromonarrez.bsky.social @tomjwebb.bsky.social among others.

@idiv-research.bsky.social Sep 7, 2026, 11:44 AMReposted by @isaacpesca.bsky.social

Reptiles are among the most misunderstood animals on the planet. 🐢 As Shai Meiri puts it in conversation with iDiv's Volker Hahn, they are fascinating and largely not harmful.🦎

Learn more on #InsideBiodiversity: insidebiodiversity.podigee.io

@telavivuni.bsky.social @unimelb.edu.au

@ellecordova.bsky.social Sep 3, 2026, 1:52 PMReposted by @isaacpesca.bsky.social

Rough Draft vs Final Draft

@obialik.bsky.social Sep 4, 2026, 2:08 PMReposted by @isaacpesca.bsky.social

Climate change affects the physiology of animals in different ways. Many shrink, but some grow, and the change can also depend on where the animal lives. 🧪

Link: doi.org/10.1073/pnas.2606099123

@pnas.org Sep 4, 2026, 4:02 PMReposted by @isaacpesca.bsky.social

As the climate changes, some mollusks will shrink to half their current size, while others will grow up to 15% larger, depending on lineage and location. The ecological and social consequences for marine ecosystems could be profound. In PNAS: https://ow.ly/iUo450ZJsTl

@drcraigmc.bsky.social Aug 31, 2026, 8:49 PMReposted by @isaacpesca.bsky.social

Huge congratulations to lead author Isaac Trindade-Santos, and to coauthors Tom Webb, Noel Heim, and the team. Built on the MOBS database and OBIS. Open access, all code and data public. 🧪 #HowToBuildAGiant #marinelife
Paper: doi.org/10.1073/pnas...

@drcraigmc.bsky.social Aug 31, 2026, 8:49 PMReposted by @isaacpesca.bsky.social

It matters beyond size. Shifts in the size structure of ocean life ripple into carbon storage, nutrient cycling, and the seafood billions of people depend on. And the gap between low and high emissions is enormous, so the scale of this is still ours to decide. 🧪 #marinelife

@drcraigmc.bsky.social Aug 31, 2026, 8:47 PMReposted by @isaacpesca.bsky.social

New in PNAS today: we projected how climate change will reshape the body size of marine life across the entire ocean. 23,329 mollusc species, every ocean basin. The headline everyone expects is "life shrinks." The real answer is far stranger. 🧪 #marinelife www.pnas.org/doi/10.1073/...