Spinos are natural swimmers. they have large amounts of oxygen and dont use stamina in water. The would easily make my top 10, Top 5, or even Top 3 travel dinos since you can quickly cross maps via land AND water. They are also easy KO’s. A low lvl can take 5-6 tranq arrows and not alot of narcos. Very common on Abberation.
To be strictly honest the spinosaur is one of the best mounts in game if you are even wble to obtain one be sure to make it a high level one they are very squishy at first so go around killing small dinos before attacking big prey
When in water, the spino can move without using stamina, this means that in a fight, if you run into a deep water source, you don't need to worry about stamina if you need to retreat. Has an oxygen bar so you can't dive forever sadly, very fast in water though.