diff --git a/data/marginalia.json b/data/marginalia.json
index eca6060..ce58201 100644
--- a/data/marginalia.json
+++ b/data/marginalia.json
@@ -581,5 +581,20 @@
       "mug",
       "coffee"
     ]
+  },
+  {
+    "id": "UmFUXvAWsXVAHhVr1kvVU",
+    "url": "/custom/science-lion.png",
+    "name": "Science Lion",
+    "w": 401,
+    "h": 512,
+    "alt": "A lion in a lab coat holding a clipboard",
+    "tags": [
+      "science",
+      "lion",
+      "lab",
+      "coat",
+      "clipboard"
+    ]
   }
 ]
\ No newline at end of file
diff --git a/site/images/marginalia/custom/science-lion.png b/site/images/marginalia/custom/science-lion.png
new file mode 100644
index 0000000..f11f84f
Binary files /dev/null and b/site/images/marginalia/custom/science-lion.png differ