Alien Nation
Protected Area
Salt River Bay National Historic Park and Ecological Preserve
Why dive here
With 458+ marine species recorded in the area - including barracuda, eagle rays, humpback whales, nurse sharks and oceanic whitetip sharks - Alien Nation offers some of St. Croix's richest diving. Water ranges 27-30°C, warmest August, September, October.
Alien Nation, sitting at 23m, is a solid introductory dive in St. Croix. It’s got that classic Caribbean vibe without being overly dramatic. We’ve found good numbers of schooling grunts here, often hanging out in the gentle current, and the occasional spotted drum flitting about. It's a nice easygoing spot, perfect if you’re looking to get comfortable in the water or just want a relaxed dive after a few more strenuous ones.
Typical Alien Nation Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Depth of 23m - Advanced Open Water certification recommended.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to Alien Nation
Dive shops near Alien Nation
Nep2une Scuba Diving
Sweet Bottom Dive Center
St. Croix Ultimate Bluewater Adventures
Reviews for Alien Nation
Conditions
Ocean conditions, forecast and tides for Alien Nation
Alien Nation Ocean Conditions
Monthly averages for Alien Nation, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (17.75, -64.87) (1km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29.1–31.2°C
Air Temperature
27°C
81°F
Wind Speed
5.97 m/s
11.6 knots
Atmospheric Pressure
1012.8 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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