Explore the Wonders of Marine Life
Discover marine species, use our interactive aquarium tools, find sustainable seafood, and explore dive sites worldwide.
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Marine Species
10
Dive Sites
10
Care Guides
65
Articles
Interactive Ocean Tools
Free tools to help you make informed decisions about aquariums, seafood, and ocean exploration.
Fish Compatibility Checker
Find out which fish can live together in your aquarium
Tank Size Calculator
Calculate the right tank size for your fish collection
Seafood Sustainability Checker
Make informed choices about sustainable seafood
Dive Site Finder
Discover amazing dive sites around the world
Featured Species
Discover fascinating marine creatures from around the world.
Fish Care Guides
Expert guides for keeping your fish healthy and thriving.
Complete Betta Fish Care Guide
Learn everything about betta fish care including tank setup, feeding schedule, water parameters, common diseases, and tank mates. Expert guide for beginners.
Complete Goldfish Care Guide
Everything you need to know about goldfish care. Learn proper tank size, feeding, water parameters, and how to keep your goldfish healthy for 10-15 years.
Complete Guppy Care Guide
Learn how to care for guppy fish including tank setup, breeding tips, feeding, water parameters, and disease prevention. Perfect guide for beginners.
Complete Neon Tetra Care Guide
Master neon tetra care with our complete guide covering tank setup, schooling requirements, feeding, water parameters, and disease prevention.
Popular Marine Life Articles
Fascinating facts about whales, sharks, and ocean creatures.
whaleBlue Whale Size Comparison: How Big Are They Really?
A blue whale is 80-100 feet long and can weigh up to 330,000 pounds. See how that compares with humans, elephants, megalodon, buses and ships.
whaleHow Smart Are Beluga Whales? What the Evidence Shows
Belugas have large, folded brains, can make speech-like sounds, and some show mirror behavior. See what research shows and what is unproven.
comparisonWhale Shark vs Blue Whale: Size, Diet and Key Differences
The blue whale is 3 to 5 times longer than a whale shark. Compare the largest fish and largest animal on size, diet, habitat and conservation status.
marine mammalOrca Eyes: How Well Can Killer Whales See?
Orca eyes are about the size of a cow's and built for water. See how sharp orca vision is, whether they see color, and what the white eye patch does.
Popular Fish Compatibility Guides
Can these fish live together? Find out with our expert compatibility analysis.
Explore by Category
Browse our comprehensive marine life database organized by category.
Is Your Seafood Sustainable?
Use our Seafood Checker to find out if your favorite fish is sustainably sourced. Get mercury levels, eco-ratings, and better alternatives.
Wild Alaska Salmon
Best Choice
Atlantic Cod
Good Alternative
Pacific Sardines
Best Choice
Low Mercury
Safe for all
Trusted Data Sources
FishBase
Species Data
IUCN
Conservation Status
NOAA
Ocean Data
Seafood Watch
Sustainability Ratings
FDA
Mercury Levels