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