An islet is generally a small island. Definitions vary and are not precise, but some suggest that an islet is a very small, often unnamed, island with little or no vegetation and unable to support hum
Rockall, an islet located west of Ireland and Scotland
Bàngchuí Island in Dalian, Liaoning, China, is a typical rock islet
Mōkōlea Rock in Kailua Bay, O‘ahu, 2.2 kilometres (1.4 mi) off North Beach, Marine Corps Base Hawaii
Danes on the islet Danmark in Norway. It is a typical Nordic skerry.
A skerry is a small rocky island, or islet, usually too small for human habitation. It may simply be a rocky reef. A skerry can also be called a low sea stack.
Islet
…Sea stack, a thin, vertical landform jutting out of a body of water. Skerry, a small rocky island, usually defined to be too small for habitation, especially in Ireland. Subsidiary islets, a more technical application, is applied…
Skerry outside Krøttøy in Harstad Municipality, Norway
Skerries that form part of Åland, Finland
Islets and skerries in Loch Uisgebhagh, east of Benbecula, Outer Hebrides