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Whale Shark Aggregations
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pelagic migration

Whale Shark Aggregations

Whale shark · Rhincodon typus

beginnerhigh confidenceBucket-list rank #4
TL;DR — Best in Ningaloo Reef, Australia · Mar · Apr · May · Jun · Jul · ~$350–$450/day.

Predictable seasonal aggregations of the world's largest fish, typically at plankton or fish-spawning hotspots.

When

JanFebMarAprMayJunJulAugSepOctNovDec

Where

  • Ningaloo Reef

    Australia

    Best current option

    Mar · Apr · May · Jun · Jul

    Permit-capped, well-managed snorkel operation timed to the post-coral-spawn plankton bloom.

    Open Ningaloo Reef in atlas →

  • Ari Atoll

    Maldives

    Best current option

    May · Jun · Jul · Aug · Sep · Oct · Nov

    Year-round sightings along the south reef edges with predictable seasonal density.

    Open Ari Atoll in atlas →

  • Isla Mujeres

    Mexico

    Best current option

    Jun · Jul · Aug · Sep

    Largest known whale shark aggregation in the world ('afuera'), feeding on bonito tuna spawn.

    Not in our dive-site atlas yet.

  • Donsol

    Philippines

    Best current option

    Feb · Mar · Apr · May

    Community-run, no-touch encounters; the original ethical whale shark site after Oslob's bait-feeding controversy.

    Not in our dive-site atlas yet.

Ethics

Maintain minimum approach distance (typically 3 m head, 4 m tail), no touching, no flash. Follow national whale-shark codes of conduct.

Operators

We don’t accept payment for listings. Operators are included when they appear in regulator permit lists or have an established track record at the site — we mark each one as verified only when we’ve cross-checked the permit ourselves.

  • Ningaloo Reef, Australia

    • Ningaloo Whale Sharks N' Dive

      listed only

      $350–$450 · 1 day · max 20

      Exmouth-based Australian government-permitted whale-shark snorkel operator.

      Visit operator site →

  • Ari Atoll, Maldives

    • Maldives Whale Shark Research Programme

      verified

      Donation / non-commercial

      Non-profit research programme; not an operator but the right starting point for ethical encounters in South Ari MPA.

      Visit operator site →

Required experience

Most encounters are surface snorkel or shallow scuba. Open Water minimum where scuba is permitted; many regulated sites are snorkel-only.

Conservation

Endangered on the IUCN Red List. Choose permitted operators in regulated sites; avoid feeding-tour operations where they are controversial.

Limitations

Aggregation timing varies year to year with prey availability. We report occurrence and operator seasonality, not per-trip probability.

Sources & methodology

How we summarise this

Best months are derived from occurrence-record clustering and well-documented regional aggregations. Per-trip probability is not published.