Speak Up For Blue’s Ocean Facts: Colours in the Ocean

By May 11, 2012 Ocean News
Crabs use bright colours to attract mates

Welcome to Speak Up For Blue’s First Ocean Facts post to educate Ocean Leaders about the Ocean on things that we don’t think you know about. Every post will look into interesting Ocean Facts that we think you should know about and teach others about it too.

Ocean Fact #1: Blue Lobsters

Lobsters found in the Northwestern Atlantic Ocean (Canada and US) are sometimes blue in colour. Scientists say the blue colour is a genetic defect and it occurs in only 1 in 2 million individuals. Blue lobsters are said to not survive as well in the wild because they can’t camouflage as well as the dark greenish-reddish brown majority and can be picked off easily by predators.

Ocean Fact #2: Purple Crabs

Crabs use bright colours to attract mates4 new species of crabs were discovered in the Philippines recently. One of the species discovered were purple…and not a dark boring purple but a wonderful bright purple with bright Orange on the tip of its claws. Did you know that crabs can discriminate different colours…Yup, scientists hypothesize that the brilliant purple colours are for social behaviours like mating where males and females are attracted to the best coloured individuals.

Ocean Fact #3: Albino Whales

An Orca whale found off the Russian waters of Commander Islands in the Bering Sea was not your typical colour of black and white, but it was white. Researchers are fascinated by this white whale who they have dubbed “Iceberg”. ‘In many ways, Iceberg is a symbol of all that is pure, wild and extraordinarily exciting about what is out there in the ocean waiting to be discovered,’ says Erich Hoyt, co-director of the Orca project. Not much is known about the orca but researchers are looking forward to finding the Orca again to find out if the mammal is a true albino (with red eyes).

What did you think about the First Ocean Facts post? Let us know in the comments below!

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Join the discussion 2 Comments

  • Homerus americanus can also turn blue as a result of diet. I raised several of them over many years. I only fed them scallops and fish. Every time they molted they got bluer and bluer. As long as they didn’t get crabs, lobster, and shrimp, to eat, they continued to turn blue.

  • Claire Jefford says:

    This is great Andrew! I will definitely be sharing this with the kids, they will love it! So impressed!

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