You're describing a fascinating mix of adaptations! It's important to note that "aquatic terrestrial" lifestyles are diverse, with organisms adapting to different degrees of both environments. Here's a breakdown of how we can order organisms based on their aquatic and terrestrial lifestyles, focusing on those with tails and legs:

1. Mostly Aquatic, Occasionally Terrestrial:

* Amphibians: Frogs, toads, salamanders are excellent examples. They have legs for hopping or walking on land, and their tails can be present in larval stages (tadpoles) or absent in adults. They rely heavily on water for breeding and often use it for escaping predators or seeking moisture.

* Some Reptiles: Sea turtles, for instance, use their flippers for swimming but come ashore to lay eggs.

2. Semi-Aquatic:

* Crocodilians: Alligators, crocodiles, and caimans spend significant time in water, utilizing their powerful tails for propulsion and legs for walking on land.

* Beavers: These rodents have strong, webbed hind feet for swimming and a flat tail that acts as a rudder. They build dams and lodges, spending much of their time in and around water.

* Otters: River otters and sea otters have sleek, streamlined bodies for swimming and webbed feet. They use their tails for balance and propulsion.

3. Mostly Terrestrial, Occasionally Aquatic:

* Many mammals: Dogs, cats, bears, and many other mammals use their legs for walking and running on land, but they can also swim or wade in water when necessary. They often have tails for balance and communication.

* Some reptiles: Lizards like the basilisk can run on water due to their lightweight body and the way they distribute their weight.

Note:

* This is a general guideline, and there are many variations within these categories.

* The "aquatic terrestrial" lifestyle is not a clear-cut division. Many organisms spend their lives adapting to both water and land in unique ways.

Let me know if you'd like me to elaborate on any of these groups or if you have a specific type of organism in mind!