
Islas Ballestas
Paracas · Peru
The Islas Ballestas are a cluster of rocky islands teeming with one of the densest concentrations of marine wildlife on the South American Pacific coast, earning their reputation as the poor man's Galapagos. Below the waterline, the Humboldt Current delivers cold, oxygen-rich water that supports vast schools of Peruvian anchoveta, which in turn sustain sea lions, penguins, and the occasional hammerhead shark. The rock arch formations and kelp forests create a dramatic underwater landscape where every surface is colonised by sea stars, anemones, and encrusting invertebrates.
Conditions
Depth
5 to 28 m
Open water and up
Current
Often strong
Can pick up on the edge
Visibility
12 to 22 m
Clearest in the calm season
Water
13 to 21°C
7mm wetsuit or drysuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 17 | 17 | 18 | 18 | 16 | 14 | 13 | 13 | 14 | 15 | 16 | 17 |
| Vis (m) | 8 | 8 | 10 | 10 | 10 | 12 | 12 | 12 | 12 | 10 | 8 | 8 |
| Current | Moderate | Moderate | Gentle | Gentle | Moderate | Moderate | Strong | Strong | Strong | Moderate | Moderate | Moderate |
Your chances of seeing each animal
South American Sea Lion
Last confirmed Jun 25, 2026 · 274 records
Almost always
Nearly every dive
Humboldt Penguin
Last confirmed Jun 30, 2026 · 213 records
Almost always
Nearly every dive
American Oystercatcher
Last confirmed Jun 30, 2026 · 85 records
Almost always
Nearly every dive
Sally Lightfoot Crab
Last confirmed Jun 30, 2026 · 83 records
Almost always
Nearly every dive
Ruddy Turnstone
Last confirmed Apr 20, 2026 · 73 records
Almost always
Nearly every dive
Hudsonian Whimbrel
Last confirmed May 3, 2026 · 61 records
Almost always
Nearly every dive
Peruvian Grunt
Last confirmed Dec 16, 2025 · 1 records
Likely
About 6 in 10 dives
Gear