The Tesoro Tiger Shark and Sand Shark represent two different approaches to beach metal detecting. Here's the key difference: the Tiger Shark uses VLF technology that excels in dry sand but struggles with saltwater, while the Sand Shark's pulse induction design ignores saltwater interference entirely.
VLF vs Pulse Induction: The Core Technology Difference
The Tiger Shark operates on Very Low Frequency (VLF) technology at 12.5 kHz, which makes it sensitive to small targets like gold jewelry and coins. This technology transmits from one set of windings and receives from another, giving you excellent target identification.
The Sand Shark uses Pulse Induction (PI) technology that "pulses" at 600 pps and receives from the same windings. This design completely ignores saltwater conductivity and mineralized sand that kills VLF performance.
Saltwater Performance: Where They Differ Most
In wet saltwater conditions, the Tiger Shark hits a wall. Even with its dedicated SALT mode, the VLF circuitry gets overwhelmed by conductive saltwater. You'll hear constant chatter and lose depth quickly.
The Sand Shark doesn't care about saltwater at all. It maintains full depth and stability whether you're hunting dry sand, wet sand, or in the surf. This is why serious beach metal detectors often choose PI technology.
Target Identification: Tiger Shark's Advantage
The Tiger Shark offers multiple discrimination modes including Motion Discriminate, Normal Mode, and Silent Search. You can reject iron while accepting good targets.
The Sand Shark operates as an all-metal detector with poor discrimination. You'll dig more trash, but you won't miss good targets masked by iron. Many beach hunters prefer this "dig it all" approach anyway.
Detection Depth Comparison
Both detectors claim 200-foot depth ratings, but real-world performance differs significantly. The Tiger Shark reaches good depth in dry sand but loses punch in wet conditions.
The Sand Shark maintains consistent depth regardless of sand conditions. In saltwater, it'll consistently outperform the Tiger Shark by several inches on the same targets.
Which Detector Should You Choose?
Choose the Tiger Shark if:
- You primarily hunt dry sand beaches
- Target identification matters more than maximum depth
- You want to discriminate against iron trash
- Small gold jewelry is your main target
Choose the Sand Shark if:
- You hunt wet sand and surf zones
- Maximum depth is your priority
- You don't mind digging all targets
- You want one detector that works everywhere on the beach
Specifications Comparison
| SPECIFICATIONS | TIGER SHARK | SAND SHARK |
|---|---|---|
| Operating Frequency: | 12.5 kHz | 600 pps |
| Search Coil Type: | Round, open center concentric | Printed Spiral |
| Search Coil Size: | 10½" diameter | 10½" diameter |
| Audio Frequency: | Approx. 270 Hz | Approx. 220 – 450 Hz |
| Audio Output: | Stereo Piezo Headphones | Stereo Piezo Headphones |
| Weight (may vary slightly): | Less than 4½ lbs. | Less than 4½ lbs. |
| Battery Requirement: | Eight AA DC (alkaline) | Eight AA DC (alkaline) |
| Battery Life (typical): | 10 to 20 hours | 10 to 20 hours |
| Optimum Temp. Range: | 30° to 100° F | 30° to 100° F |
| Operating Modes: | No-Motion All Metal (Fast & Slow Tune) Normal Mode Salt Mode Silent Search Motion Discriminate | VCO Motion ALL Metal Adjustable Audio Frequency All Metal |
| Maximum Depth Rating: | 200 ft | 200 ft |
| Technology: | Very Low Frequency (VLF) | Pulse Induction (PI) |
Alternative Beach Detectors to Consider
While both Tesoro models are discontinued, modern waterproof metal detectors offer better technology. Consider Minelab metal detectors like the Equinox series for beach hunting, or check out multi-frequency metal detectors that combine VLF sensitivity with saltwater stability.
For serious beach hunters, advanced metal detectors provide better performance than either Tesoro model.
