Matching Pairs At the Beach Vocabulary Online version 5th Grade - Unit 2 Week 1 by Miss Sonzogni 1 Sternly 2 Hammocks 3 Tweezers 4 Sea Urchins 5 Lamented 6 Algae 7 Driftwood 8 Concealed Small, round sea animals with spiny shells. Hanging beds or couches made of canvas, cord, or other materials. Strictly; firmly Wood carried along by water, or washed ashore by the water. Put out of sight; hidden. Small pinchers for picking up small objects. Felt or showed grief A group of living things, mostly found in water, that can make their own food.