Was Crocodile stronger at Marineford? Or was he holding back in Alabasta?

 During the Alabasta arc, Crocodile displayed a level of power that was initially considered overwhelming by the Straw Hat Pirates. He possessed the Logia-type Devil Fruit called the Suna Suna no Mi (Sand-Sand Fruit), which granted him the ability to control and transform into sand. He had a reputation as a Shichibukai and controlled the desert kingdom of Alabasta from the shadows. His strength was showcased through his battles with Luffy and others. At Marineford, Crocodile was present as part of the war that took place at Marine Headquarters. While he did participate in the battle, he didn't display the same level of dominance as some other powerful characters present. This has led fans to speculate that he might not have been as strong as initially portrayed in Alabasta. It's important to note that power scaling and character abilities can be subject to interpretation and development by the author. Oda often keeps details deliberately open-ended to keep the story intriguing.

Timeless creatures

 "timeless creatures" is another way of referring to species that have persisted for millions of years, despite significant changes in their environments and the evolution of other species around them. These species are often considered to be "living fossils" because they have remained largely unchanged over long periods of time and offer a glimpse into the past.

Some examples of timeless creatures include:

Ginkgo trees: This species of tree is one of the oldest living plants on the planet, with a history that dates back over 270 million years. It has remained relatively unchanged over this time and is considered a living fossil.

Nautiloids: These ancient cephalopods, which are related to squid and octopuses, have existed for over 500 million years and have remained largely unchanged since their early evolution.

Stony corals: These ancient invertebrates have been around for over 500 million years and are one of the oldest animal groups on the planet. They have remained largely unchanged over this time, making them a classic example of a timeless creature.

By studying these timeless creatures, scientists can better understand the processes of evolution and the mechanisms that have allowed certain species to persist for millions of years, despite significant changes in their environments. These species also offer a glimpse into the diversity of life that has existed on our planet and provide insights into the ancient oceans, forests, and other ecosystems that once dominated the earth.