The Canon EOS Rebel T5i is a pretty awesome DSLR. It is not too expensive but a very capable device. It is not designed to be exposed to water though. If you plan to take your DSLR camera anywhere close to water, you should give waterproof T5i accessories a look:
MegaGear 130ft 40m Underwater Waterproof case: this polycarbonate case has a durable design and is waterproof to 40 meters. Ideal for diving, surfing, snorkeling, and skiing.
Canon EOS Rebel Waterproof Case: keeps your camera safe from harm. It is waterproof to 30′ for 24 hours. It is also crushproof to exceed MIL-STD’s of 400 lbs requirement.
Ikelite 6871.65 Underwater Camera: gives you access to all camera functions while you go about capturing shots underwater. It has comfortable rubber grips.
These are not cheap but keep your camera protected from water damage. Nice to have for underwater photography.