diff --git a/book/chapters/rob/documentation.ipynb b/book/chapters/rob/documentation.ipynb
index 9d880cf..1330c46 100644
--- a/book/chapters/rob/documentation.ipynb
+++ b/book/chapters/rob/documentation.ipynb
@@ -3950,7 +3950,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.3"
+   "version": "3.11.4"
   }
  },
  "nbformat": 4,
diff --git a/book/chapters/rob/ocean_science.ipynb b/book/chapters/rob/ocean_science.ipynb
index 93a8693..e5a58ca 100644
--- a/book/chapters/rob/ocean_science.ipynb
+++ b/book/chapters/rob/ocean_science.ipynb
@@ -10,16 +10,35 @@
     "[Jupyter Book](https://geo-smart.github.io/oceanography/intro.html) and [GitHub repo](https://github.com/geo-smart/oceanography).\n",
     "\n",
     "\n",
-    "`img` html Try 1 \n",
+    "This image-includer works locally for jpg, png and svg.\n",
     "\n",
     "\n",
     "<BR>\n",
-    "<img src=\"../../img/revelle.jpg\" style=\"float: left;\" alt=\"drawing\" class=\"bg-primary\" width=\"700px\" height=\"700px\"/>\n",
+    "<img src=\"./../../img/revelle.jpg\" style=\"float: left;\" alt=\"drawing\" width=\"400\"/>\n",
     "<div style=\"clear: left\">\n",
     "<BR>\n",
+    "\n",
+    "    \n",
+    "<br><br><br><br>\n",
+    "    \n",
     "    \n",
+    "<BR>\n",
+    "<img src=\"./../../img/shallowprofilerinsitu.png\" style=\"float: left;\" alt=\"drawing\" width=\"400\"/>\n",
+    "<div style=\"clear: left\">\n",
+    "<BR>\n",
     "\n",
-    "figure construct Try 1\n",
+    "<br><br><br><br>\n",
+    "    \n",
+    "\n",
+    "<BR>\n",
+    "<img src=\"./../../img/use_case_badge.svg\" style=\"float: left;\" alt=\"drawing\" width=\"400\"/>\n",
+    "<div style=\"clear: left\">\n",
+    "<BR>\n",
+    "    \n",
+    "<br><br>\n",
+    "\n",
+    "\n",
+    "The *figure* and *image* directives work in the Jupyter Book but not locally (yet):\n",
     "\n",
     "    \n",
     "<br><br>\n",
@@ -30,18 +49,10 @@
     "height: 300px\n",
     "name: directive-fig\n",
     "---\n",
-    "Here is my figure caption!\n",
+    "Research Vessel Revelle (Scripps)\n",
     "```\n",
     "    \n",
     "<br><br>\n",
-    "    \n",
-    "Markdown B: Use a more complicated back-tick construct to show the Revelle:\n",
-    "\n",
-    "\n",
-    "    \n",
-    "image construct Try 1\n",
-    "    \n",
-    "\n",
     "<br><br>\n",
     "\n",
     "\n",
@@ -75,42 +86,58 @@
     "```\n",
     "    \n",
     "<br><br>\n",
+    "<br><br>\n",
+    "<br><br>\n",
     "\n",
-    "    \n",
-    "Bang Try 1\n",
     "\n",
+    "Here is the `![alt](link)` construct which works locally and in the Book.\n",
+    "Down side: Renders are actual size.\n",
+    "\n",
+    "<br><br>\n",
+    "<br><br>\n",
     "    \n",
     "![Revelle](../../img/revelle.jpg)\n",
     "\n",
+    "<br><br>\n",
+    "<br><br>\n",
     "\n",
     "![Badge](../../img/use_case_badge.svg)\n",
     "\n",
+    "<br><br>\n",
+    "<br><br>\n",
     "\n",
     "![Dubious](../../img/dubious.png)\n",
     "\n",
+    "<br><br>\n",
+    "<br><br>\n",
+    "\n",
+    "\n",
+    "## Themes\n",
+    "\n",
+    "\n",
+    "Geo-SMART Jupyter Book theme placeholders:\n",
     "\n",
-    "### To Do\n",
-    "\n",
-    "- Cover the default chapter purposes here; and chart out the TOC properly, align the notebooks\n",
-    "    - These were deleted from the Jupyter Book 'chapters' folder `_toc.yml` file\n",
-    "    - file: chapters/motivation\n",
-    "    - file: chapters/methods\n",
-    "    - file: chapters/data\n",
-    "    - file: chapters/development\n",
-    "    - file: chapters/training\n",
-    "    - file: chapters/evaluation\n",
-    "    - file: chapters/workflow\n",
-    "    - file: chapters/reproducibility\n",
-    "    - file: chapters/conclusion\n",
-    "    - file: chapters/todo\n",
-    "    - file: chapters/questions\n",
-    "    - file: chapters/troubleshooting\n",
+    "\n",
+    "- Motivation: Create an access path to multiple views of ocean near-surface processes\n",
+    "- Method: Document the data acquisition and analysis process\n",
+    "- Development history: This project has been underway since 2016\n",
+    "- Training/Evaluation: Typically refers to ML; not present here yet\n",
+    "- Workflow\n",
+    "- Reproducibility\n",
+    "- Questions\n",
+    "- To Do\n",
+    "- Conclusion\n",
+    "- Troubleshooting\n",
     "    \n",
     "\n",
-    "### Introduction\n",
+    "## Introduction\n",
     "\n",
     "\n",
-    "Let's begin with **Chlorophyll** as a convenient fluorescing marker in the larger context of **marine ecology**.\n",
+    "The ocean is water and salt; as well as being a reservoir of carbon compounds that\n",
+    "are the basis for and byproducts of ocean life. Our objective is to explore observational\n",
+    "data from the ocean with the idea of developing insights into the physical, chemical\n",
+    "and biological processes in the surface waters that are illuminated by sunlight. \n",
+    "Let's begin with a table of molecules; as a start on ocean chemistry.\n",
     "\n",
     "    \n",
     "| Mass (Daltons) | Substance\n",
@@ -120,167 +147,8 @@
     "|62|carbonic acid H<sub>2</sub>CO<sub>3</sub>\n",
     "|61|bicarbonate anion HCO<sub>3</sub><sup>-</sup>\n",
     "|60|carbonate CO<sub>3</sub><sup>2-</sup>\n",
-    "|?|sugars here\n",
-    "|894|chlorophyll C<sub>55</sub>H<sub>72</sub>MgN<sub>4</sub>O<sub>5</sub>\n",
-    "  \n",
-    "    \n",
-    "The ocean is (of course) more than mere water and salt; it is a reservoir of carbon compounds that\n",
-    "are the basis for and byproducts of ocean life."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 8,
-   "metadata": {
-    "tags": []
-   },
-   "outputs": [
-    {
-     "data": {
-      "text/html": [
-       "\n",
-       "<br>\n",
-       "This Python cell uses %%html cell magic to support html. \n",
-       "<br>\n",
-       "The ocean is (of course) more than mere water and salt; it is a reservoir of carbon compounds that\n",
-       "are the basis for and byproducts of ocean life.\n",
-       "<br>\n",
-       "<br>\n",
-       "Through a molecular\n",
-       "chemistry lens ocean carbon is both basis for and currency of life. The table below \n",
-       "lists some important chemical constituents of the ocean sorted by mass. \n",
-       "The heaviest of these, **chlorophyll**, is a convenient fluorescing marker in the \n",
-       "context of **marine ecology**.\n",
-       "<br>\n",
-       "\n",
-       "<html>\n",
-       "\n",
-       "<body>\n",
-       "    <table>\n",
-       "        <tr>\n",
-       "            <th>Mass</th>\n",
-       "            <th>Chemical</th>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>1</td>\n",
-       "            <td>Hydrogen ion H<sup>+</sup></td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>32</td>\n",
-       "            <td>dissolved oxygen O<sub>2</sub></td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>46</td>\n",
-       "            <td>carbon dioxide CO<sub>2</sub></td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>62</td>\n",
-       "            <td>carbonic acid H<sub>2</sub>CO<sub>3</sub></td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>61</td>\n",
-       "            <td>bicarbonate anion HCO<sub>3</sub><sup>-</sup></td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>60</td>\n",
-       "            <td>carbonate CO<sub>3</sub><sup>2-</sup></td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>180</td>\n",
-       "            <td>glucose C<sub>6</sub>H<sub>12</sub>O<sub>6</sub></td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>892</td>\n",
-       "            <td>chlorophyll C<sub>55</sub>H<sub>72</sub>MgN<sub>4</sub>O<sub>5</sub></td>\n",
-       "        </tr>\n",
-       "        </table>\n",
-       "</body>\n",
-       "\n",
-       "</html>\n"
-      ],
-      "text/plain": [
-       "<IPython.core.display.HTML object>"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    }
-   ],
-   "source": [
-    "%%html\n",
-    "\n",
-    "<br>\n",
-    "This Python cell uses %%html cell magic to support html. \n",
-    "<br>\n",
-    "The ocean is (of course) more than mere water and salt; it is a reservoir of carbon compounds that\n",
-    "are the basis for and byproducts of ocean life.\n",
-    "<br>\n",
-    "<br>\n",
-    "Through a molecular\n",
-    "chemistry lens ocean carbon is both basis for and currency of life. The table below \n",
-    "lists some important chemical constituents of the ocean sorted by mass. \n",
-    "The heaviest of these, **chlorophyll**, is a convenient fluorescing marker in the \n",
-    "context of **marine ecology**.\n",
-    "<br>\n",
-    "\n",
-    "<html>\n",
-    "\n",
-    "<body>\n",
-    "    <table>\n",
-    "        <tr>\n",
-    "            <th>Mass</th>\n",
-    "            <th>Chemical</th>\n",
-    "        </tr>\n",
-    "        <tr>\n",
-    "            <td>1</td>\n",
-    "            <td>Hydrogen ion H<sup>+</sup></td>\n",
-    "        </tr>\n",
-    "        <tr>\n",
-    "            <td>32</td>\n",
-    "            <td>dissolved oxygen O<sub>2</sub></td>\n",
-    "        </tr>\n",
-    "        <tr>\n",
-    "            <td>46</td>\n",
-    "            <td>carbon dioxide CO<sub>2</sub></td>\n",
-    "        </tr>\n",
-    "        <tr>\n",
-    "            <td>62</td>\n",
-    "            <td>carbonic acid H<sub>2</sub>CO<sub>3</sub></td>\n",
-    "        </tr>\n",
-    "        <tr>\n",
-    "            <td>61</td>\n",
-    "            <td>bicarbonate anion HCO<sub>3</sub><sup>-</sup></td>\n",
-    "        </tr>\n",
-    "        <tr>\n",
-    "            <td>60</td>\n",
-    "            <td>carbonate CO<sub>3</sub><sup>2-</sup></td>\n",
-    "        </tr>\n",
-    "        <tr>\n",
-    "            <td>180</td>\n",
-    "            <td>glucose C<sub>6</sub>H<sub>12</sub>O<sub>6</sub></td>\n",
-    "        </tr>\n",
-    "        <tr>\n",
-    "            <td>892</td>\n",
-    "            <td>chlorophyll C<sub>55</sub>H<sub>72</sub>MgN<sub>4</sub>O<sub>5</sub></td>\n",
-    "        </tr>\n",
-    "        </table>\n",
-    "</body>\n",
-    "\n",
-    "</html>\n"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "* FASTQ sequence file format\n",
-    "* Do prisoners hats: Were you paying attention?\n",
-    "* Magda still interested?\n",
-    "* CRC and Hamming\n",
-    "* S3 non-object access\n",
-    "* What about a question for which there is no computer code... but then that code gets written\n",
-    "* Hofstadter self-destroying turntable (Luddites using wrenches from loom builders)\n",
-    "* Talk to Wendi about using a zar API"
+    "|180|glucose C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>\n",
+    "|894|chlorophyll C<sub>55</sub>H<sub>72</sub>MgN<sub>4</sub>O<sub>5</sub>"
    ]
   },
   {
@@ -449,11 +317,13 @@
     "### Metabolic energy for an apex predator\n",
     "\n",
     "\n",
-    "<BR>\n",
-    "<img src=\"./../../img/Sphyrna_mokarran.png\" style=\"float: left;\" alt=\"drawing\" width=\"500\"/>\n",
-    "<div style=\"clear: left\">\n",
-    "<BR>\n",
-    "\n",
+    "```{figure} ../../img/Sphyrna_mokarran.png.jpg\n",
+    "---\n",
+    "height: 500px\n",
+    "name: directive-fig\n",
+    "---\n",
+    "Apex predator: Great hammerhead shark (Sphyrna mokarran)\n",
+    "```\n",
     "    \n",
     "Sunlight is not a direct energy source for \n",
     "[Sphyrna mokarran](https://en.wikipedia.org/wiki/Great_hammerhead))\n",