Can you find four nice things to say about horse shoe crabs?

Question:

Can you find four nice things to say about horse shoe crabs?

without being sarcastic?

Best Answer - Chosen by Asker: 1) The medical profession uses an extract from the horseshoe crab's blue, copper-based blood called lysate to test the purity of medicines? It's blood is also used to detect the presence of bacteria in medical supplies. Certain properties of the shell have also been used to speed blood clotting and to make absorbable sutures.

2) They're very interesting looking

3) They've been around for ages (over 300 million years) almost unchanged, which means they're doing something right.

4) They make me think of a Ferengi space ship