diff --git a/frontend/app/datasets/page.tsx b/frontend/app/datasets/page.tsx
index 4f700ba..a9d0439 100644
--- a/frontend/app/datasets/page.tsx
+++ b/frontend/app/datasets/page.tsx
@@ -501,48 +501,79 @@ export default function DatasetsPage() {
                             <div className="text-center py-6 text-muted-foreground text-xs">Loading…</div>
                           ) : snaps.length === 0 ? (
                             <div className="text-center py-6 text-muted-foreground text-xs">No snapshots</div>
-                          ) : (
-                            <div className="overflow-x-auto">
-                              <table className="w-full text-xs">
-                                <thead className="bg-muted">
-                                  <tr>
-                                    <th className="px-3 py-2 text-left font-medium">Name</th>
-                                    <th className="px-3 py-2 text-left font-medium">Created</th>
-                                    <th className="px-3 py-2 text-left font-medium">Used</th>
-                                    <th className="px-3 py-2 text-left font-medium">Referenced</th>
-                                    <th className="px-3 py-2 text-left font-medium">Clones</th>
-                                    <th className="px-3 py-2 text-right font-medium"></th>
-                                  </tr>
-                                </thead>
-                                <tbody>
-                                  {snaps.map((snap) => (
-                                    <tr key={snap.name} className="border-b border-border/50 hover:bg-muted/30">
-                                      <td className="px-3 py-2 font-mono">
-                                        <span className="text-muted-foreground">{snap.dataset}@</span>{snap.name.split("@")[1]}
-                                      </td>
-                                      <td className="px-3 py-2 text-muted-foreground">
-                                        {snap.creation_datetime ? new Date(snap.creation_datetime).toLocaleString() : "—"}
-                                      </td>
-                                      <td className="px-3 py-2">{formatBytes(snap.used)}</td>
-                                      <td className="px-3 py-2">{formatBytes(snap.referenced)}</td>
-                                      <td className="px-3 py-2 text-muted-foreground">—</td>
-                                      <td className="px-3 py-2 text-right">
-                                        <button
-                                          className="p-1 rounded hover:bg-muted"
-                                          onClick={(e) => {
-                                            e.stopPropagation()
-                                            setSnapContextMenu({ snap, x: e.clientX, y: e.clientY })
+                          ) : (() => {
+                            // Group snapshots by dataset
+                            const groups = new Map<string, Snapshot[]>()
+                            snaps.forEach((s) => {
+                              const ds = s.dataset || s.name.split("@")[0]
+                              if (!groups.has(ds)) groups.set(ds, [])
+                              groups.get(ds)!.push(s)
+                            })
+                            const expandKey = `snapgroup-${pool.name}`
+                            return (
+                              <div className="overflow-x-auto">
+                                <table className="w-full text-xs">
+                                  <thead className="bg-muted">
+                                    <tr>
+                                      <th className="px-3 py-2 text-left font-medium">Name</th>
+                                      <th className="px-3 py-2 text-left font-medium">Created</th>
+                                      <th className="px-3 py-2 text-left font-medium">Used</th>
+                                      <th className="px-3 py-2 text-left font-medium">Referenced</th>
+                                      <th className="px-3 py-2 text-left font-medium">Clones</th>
+                                      <th className="px-3 py-2 text-right font-medium"></th>
+                                    </tr>
+                                  </thead>
+                                  <tbody>
+                                    {Array.from(groups.entries()).map(([ds, dsSnaps]) => {
+                                      const isGroupExpanded = expandedDatasets.has(`${expandKey}-${ds}`)
+                                      return [
+                                        // Group header row
+                                        <tr
+                                          key={`group-${ds}`}
+                                          className="border-b border-border bg-muted/20 hover:bg-muted/40 cursor-pointer select-none"
+                                          onClick={() => {
+                                            const next = new Set(expandedDatasets)
+                                            if (isGroupExpanded) next.delete(`${expandKey}-${ds}`)
+                                            else next.add(`${expandKey}-${ds}`)
+                                            setExpandedDatasets(next)
                                           }}
                                         >
-                                          <MoreVertical className="w-3 h-3" />
-                                        </button>
-                                      </td>
-                                    </tr>
-                                  ))}
-                                </tbody>
-                              </table>
-                            </div>
-                          )}
+                                          <td className="px-3 py-2 font-mono font-medium" colSpan={5}>
+                                            <div className="flex items-center gap-2">
+                                              {isGroupExpanded ? <ChevronDown className="w-3 h-3" /> : <ChevronRight className="w-3 h-3" />}
+                                              <span>{ds}</span>
+                                              <span className="text-muted-foreground font-normal">{dsSnaps.length}</span>
+                                            </div>
+                                          </td>
+                                          <td />
+                                        </tr>,
+                                        // Snapshot rows (expanded)
+                                        ...(isGroupExpanded ? dsSnaps.map((snap) => (
+                                          <tr key={snap.name} className="border-b border-border/40 hover:bg-muted/30">
+                                            <td className="px-3 py-1.5 font-mono pl-8">{snap.name.split("@")[1]}</td>
+                                            <td className="px-3 py-1.5 text-muted-foreground">
+                                              {snap.creation_datetime ? new Date(snap.creation_datetime).toLocaleString() : "—"}
+                                            </td>
+                                            <td className="px-3 py-1.5">{formatBytes(snap.used)}</td>
+                                            <td className="px-3 py-1.5">{formatBytes(snap.referenced)}</td>
+                                            <td className="px-3 py-1.5 text-muted-foreground">—</td>
+                                            <td className="px-3 py-1.5 text-right">
+                                              <button
+                                                className="p-1 rounded hover:bg-muted"
+                                                onClick={(e) => { e.stopPropagation(); setSnapContextMenu({ snap, x: e.clientX, y: e.clientY }) }}
+                                              >
+                                                <MoreVertical className="w-3 h-3" />
+                                              </button>
+                                            </td>
+                                          </tr>
+                                        )) : [])
+                                      ]
+                                    })}
+                                  </tbody>
+                                </table>
+                              </div>
+                            )
+                          })()}
                         </div>
                       )
                     })()}