The bathypelagic zone of the ocean is 1,000 to 4,000 meters below the surface. Sometimes it's called the midnight zone, because it's too deep for sunlight to reach. Most animals here are much smaller than their shallow-water counterparts. But occasionally, researchers find the rare deep sea giant: giant isopods, giant squids, colossal squids, sea spiders. While these giants sound like the subjects of some people's nightmares, deep sea biologist Craig McClain dreams about them. And today on the show, he helps unravel the mystery and research behind these creatures.
We have a newsletter that lets you go even deeper with the marine research each week of Sea Camp. You can sign up here!
Interested in more ocean mysteries? Let us know at shortwave@npr.org.
Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.
Listen to Short Wave on Spotify and Apple Podcasts.
This episode was produced by Hannah Chinn and Rachel Carlson. It was edited by Rebecca Ramirez and fact-checked by Tyler Jones. Jimmy Keeley was the audio engineer.
Copyright 2025 NPR
