COLDWATERS C I E N C E

A journal of marine life
& ocean exploration

CURATED READING PATHS

Sharks, tracking and fossils

Compare real body plans, movement evidence and the fossil record, with clear limits on what a sighting or tracking point can establish.

Compare real body plans, movement evidence and the fossil record, with clear limits on what a sighting or tracking point can establish.

  1. Marine animals

    Why great white sharks breach: interpreting California footage ↗

    A breach shows a shark accelerating upward until much or all of its body clears the surface, but the jump alone does not reveal its purpose. South African biologging offers a measured hunting mechanism; California footage still needs its own date, location and behavioral evidence.

  2. Marine animals

    Great white sharks near Marina State Beach: observations and reporting ↗

    Reports near Marina State Beach should separate what an observer saw from expert identification and official action. Regional research documents juvenile white sharks in Monterey Bay, while the beach’s strong rip-current hazard and changing local conditions require attention independent of any shark report.

  3. Marine animals

    Following Breton the great white: how shark tracking works ↗

    Breton’s tracker records occasional successful transmissions, not a continuous route. Understanding the tag, the timestamp, and the difference between displacement and distance traveled helps readers interpret what a shark map can—and cannot—show.

  4. Marine animals

    Basking shark versus whale shark: size, feeding and identification ↗

    Both sharks filter small prey, but their head shape, mouth position, gills, and feeding mechanics differ. Size figures also describe unlike statistics: typical basking-shark lengths, reported maxima, and modeled whale-shark growth plateaus should not be treated as interchangeable.

  5. Marine animals

    Where do basking sharks live? Range versus individual sightings ↗

    Basking sharks range broadly through temperate coastal and offshore waters, but a range map cannot confirm an animal at a particular beach. Sightings depend on where people search, what they record, and whether sharks are visible at the surface.

  6. Marine animals

    Hammerhead shark sizes: compare species rather than one maximum ↗

    Hammerhead sharks span a wide range of body sizes, so a family-wide maximum does not describe a typical animal. Compare reported total lengths by species, distinguish averages from exceptional records, and use head shape and other traits alongside size.

  7. Marine animals

    Could megalodon still be alive? Reading the fossil and modern evidence ↗

    Fossil ages and the absence of authenticated recent evidence support megalodon’s extinction, not survival in the deep ocean. Read geological provenance carefully: a tooth found in young sediment can be older than the deposit, and an estimated extinction date is not an exact last sighting.

  8. Marine animals

    Megalodon teeth: identification, condition and questions about value ↗

    A megalodon tooth is identified from a combination of crown, serrations, cusps, and root traits; size alone is not enough. Document provenance and condition before discussing value, since tooth position, repairs, and market context complicate comparisons.

  9. Marine animals

    Whale-shark reports from Cambodia: how to check a sighting ↗

    An official report of a whale shark near Sdach Island gives a place and encounter date, but no measured length or individual photo-identification. Learn how to check its reporting chain, read visible features, and separate one sighting from evidence of population change.

  10. Marine animals

    Great whites near Perth beaches: monitoring, sightings and uncertainty ↗

    Western Australia’s shark information separates public reports from acoustic detections of tagged animals. Learn what receivers can and cannot reveal, how to read an advisory’s chronology, and why a blank map or a carcass-related warning cannot settle whether a great white is nearby.

  11. Marine animals

    How to assess a hammerhead-shark sighting near Newport ↗

    A “Newport” hammerhead report needs a confirmed location, date, and original observer before its biology can be interpreted. If it means Newport, Rhode Island, smooth hammerheads are regionally plausible summer visitors, but a fin-only image or a tracking study cannot identify a particular shark.

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