ocearch-global-shark-tracker-metrics

The OCEARCH Global Shark Tracker is a dynamic, real-time interface that visualizes recent activity rather than serving as a static inventory of all historical tags Verified Answer #1. As of late July 2026, the tracker displays approximately 30 animals with recent pings Verified Answer #1. The number of active tracks is a fluid metric that fluctuates daily based on research expedition cycles, tag performance, and biological behavior Verified Answer #1.

Tracking Mechanism

The tracker functions as a visualization tool for real-time and recent satellite transmissions Verified Answer #1. A shark or other marine animal, such as a sea turtle, is only visible if its tag transmits a "ping" while the dorsal fin or antenna is above the water's surface Verified Answer #1. The primary active display on the interface is a subset of total historical data, specifically focusing on animals with recent signal activity Verified Answer #1.

Factors Influencing Active Metrics

Several variables influence the number of animals visible on the tracker at any given time Verified Answer #1:

• Tag Attrition: Satellite (SPOT) tags have a finite battery life, averaging approximately five years Verified Answer #1.
• Tag Status: Animals naturally transition to an inactive status as tags expire, fail, or detach Verified Answer #1.
• Environmental and Behavioral Gaps: An animal may remain inactive on the map if it stays submerged for extended periods, which is common during long-distance migration or feeding cycles Verified Answer #1.
• Transmission Requirements: If a large pelagic predator does not surface to transmit, it will not appear as active even if the tag is functioning Verified Answer #1.